She's got a blank space, baby! As another one of Taylor Swift's relationships bites the dust, FEMAIL asks just why CAN'T the stunning chart-topper hang on to a man?

Even the doubters who teased Taylor Swift for her 'serial dating' habits — and her penchant for penning songs about 'long list of ex-lovers' — began singing a different tune about her affair with fellow musician Calvin Harris.

After all, the couple started things off slowly, and the 26-year-old seemed older and wiser. But following her split with the 32-year-old producer and songwriter this week, fans can't help but wonder: What exactly is going wrong in Taylor Swift's love life?

Here, FEMAIL takes a look back at nearly a decade of the Grammy winner's incredibly high-profile relationships in an effort to unearth just where and why things go south. 

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That's a wrap! Taylor Swift and Calvin Harris have called it quits after a year-long realtionship

Lovey-dovey: The two had been very publicly affectionate since they first came out as a couple in May

The end: No official reason has been given for the split, which came as a surprise following reports that they were planning to eventually wed

Some might argue that Taylor's relationships are doomed as soon as she pulls them into the public eye. The star doesn't take too much caution to keep her private life private, and often happily parades her beaus in front of the paparazzi.

'It’s very hard to date in the spotlight. Because Taylor's so famous, people are fascinated by what goes on with her,' professional matchmaker Samantha Daniels, who founded The Dating Lounge app, told Daily Mail Online.

Dating so publicly has its drawbacks. For one thing, there's a lot of pressure when strangers constantly have something to say about your love life — and you always have to be on your guard.

'Having other people notice what you do and comment, you might begin second guessing,' Samantha explained. 'You also can't really be yourself. If you think about being affectionate, you have to wonder if someone is taking your picture. 

'You think, "If we get in a sarcastic disagreement, are people gonna think we’re fighting when we’re just being playful?"

'You constantly have to watch how you behave, which makes a relationship less organic.'

Watchful eyes: Taylor doesn't mind parading her relationships in from of the public, which puts all of her romances under scrutiny 

Never alone: Matchmaker Samantha Daniels speculates that the couple was probably interrupted whenever they went out — making it hard to have intimate moments 

That's what they say... Their relationship was also subjected to outside speculation

Over so soon: Just last month the couple celebrated their one-year anniversary

With Calvin, though, Taylor at least tried to keep a few details under wraps. In April, she told Vogue: 'I'm in a magical relationship right now. And of course I want it to be ours, and low key...This is the one thing that's been mine about my personal life.'

However, some stars go to great lengths to keep the details of their relationships private, refusing to even acknowledge that they are attached and rarely appearing with their significant others in public. Ryan Gosling and Eva Mendes are hardly ever pictured together. Kerry Washington got married in secret. Mary-Kate Olsen still hasn't uttered a public word about husband Olivier Sarkoszy.

But Taylor had often been spotted with Calvin, hugging him at the Billboard Music Awards in May of 2015, sharing vacation snaps on Instagram, and telling him 'I love you' on stage at a concert on her 1989 tour.

And even when they weren't in front of the cameras, they likely had fans to contend with. Samantha noted: 'When people are in the public eye, they get used to people interrupting intimate times. If Taylor goes out for a romantic dinner, she gets interrupted 47 times for photos... it’s hard to have an intimate evening if that happens.'

On the road: Both Taylor and Calvin were very busy as well, with Taylor gone for half of their relationship on her 1989 tour

Successful: Calvin has also been very busy, and the two were not often in the same place at the same time

Having his relationship written out about was 'interesting' for Calvin, who told DJs on KISS FM UK last August: 'Obviously there's different things written about it every day and even if we don't do anything sort of publicly for a while, someone will make something up, and there will be some sort of story.'

Of course, there could be a million other factors at play that ultimately led to their split, too, from general differences in personality to conflicting schedules.

Both stars are busy and often jetting off to different cities — Taylor spent nearly half of their relationship on the road with her 1989 tour — and being apart so often can put a strain on any couple.

'They both had really busy schedules. Being in different places at different times, it’s hard to have a regular relationship that people have,' said Samantha. 'And when you haven’t seen someone in a while, the first 24 hours can be spent getting to know each other again. You have to get back into your groove.'

Not a man-eater! Taylor has acknowledged that she earned a reputation as a serial dater, but insists that she dated normally for a girl in her teens and 20s

Too busy:She has a fling with Harry Styles that was rumored to have ended in part because they never saw each other

Normal: Taylor was quite young during most of her relationships and seems to have just been dating around and having fun

Being in the public eye and constantly traveling may very well have impacted her past relationships too — though most of her failed flings could very well be chalked up to the star being young and simply dating around.

'You know, I went out on a normal amount of dates in my early 20s, and I got absolutely slaughtered for it,' she told Vogue. 'And it took a lot of hard work and altering my decision-making. I didn't date for two and a half years. Should I have had to do that? No.' 

That dry spell was between the start of her relationship with Calvin and the end of her fling with One Direction's Harry Styles, whom she was linked to from December 2012 to January 2013.

After Taylor and Harry split, a source told Life & Style: 'They are both really busy and never in one place for long.'   

Older woman: In 2012 she dated Conor Kennedy for a few months, despite a four-year age gap

Didn't last: Some speculated Conor was too young for Taylor, while others think she was obsessed with the famous family

Speculation over why Taylor's previous relationship ended was quite different, however: Before Harry, she dated Conor Kennedy for about three months in 2012.

With a four-year age-difference between them — Taylor being the older party — many thought the teen was too young and likely too immature for the her.

A few skeptics also questioned Taylor's motives, pointing out that she made no secret of her admiration for the famous family.

'The only time in my life I have ever been star-struck was meeting Caroline and Ethel Kennedy,' she told Vogue that year. 'I got to spend the afternoon with Ethel a couple of weeks ago. 

'She is one of my favorites because you look back at the pictures of her and Bobby, and they always look like they are having the most fun out of everybody. 

'You know, eleven kids, all these exotic animals on their property,' she went on. 'I've read a lot about them.' 

Didn't work out: She had a brief affair with Jake Gyllenhaal in 2010, and there seem to be no hard feeling between the pair

For a short time from 2010, Taylor was linked to Jake Gyllenhaal, an unlikely match given that Taylor was just 21 at the time, while Jake was 30.

And once again, it seemed to be the cameras that got in the way of romance — and that pesky age difference.

'[Jake] said he wasn't feeling it anymore and was uncomfortable with all the attention they got. He also said he could feel the age difference,' a source told US Weekly in 2011. 

Another 'insider' added: 'Jake cares about her, but [the publicity] was a lot for him. He wants to keep his private life private, and that’s hard to do dating Taylor.'

He also admitted to Howard Stern in 2015 that he has commitment issues, which is why he's yet to settle down.  

Bye, Tay: When she was 20, she dated the similarly-named Taylor Lautner, but things fizzled out

Young love: She was also linked to Lucas Till, who played her love interest in the You Belong With Me video

Public breakout: Her relationship with Joe Jonas was very much in the public eye — as was their breakup by text message

Most of her other failed relationships before Jake — with Twilight star Taylor Lautner in 2010, her You Belong With Me music video love interest Lucas Till in 2009, and singer Joe Jonas in 2008 — may also have been affected by fame and crazy schedules, but likely were just the result of being young and dating around.

After all, she was still a teenager when she dated Joe and Lucas, and only 20 for the few months she was seeing Taylor — and in the celebrity world, like the real world, it's rare to be forever tied to your teenage boyfriends.

Even now, in her mid-20s, Samantha says of Taylor: 'She’s really still learning how to have a long-lasting relationship.'

The one exception to the pattern might be John Mayer, whom she was romantically paired with in 2009 and 2010. In her song Dear John, Taylor implied that John 'messed with' her and played 'dark twisted games' even though she was 'too young'. She sings that she was 'in love' and he left her crying 'the whole way home'.

John, though, publicly challenged Taylor's version of events, telling Rolling Stone: 'I didn’t deserve it. I’m pretty good at taking accountability now, and I never did anything to deserve that. It was a really lousy thing for her to do.' 

Not amused: After splitting with John Mayer, Taylor wrote of her anger and heartbreak in the song Dear John — which John himself called unfair

Move away from the spotlight: Matchmaker Samantha thinks Taylor should try dating someone who isn't famous next

Taylor, of course, still has plenty of time to pair off — and could even afford to take another break from dating to enjoy being at the pinnacle career.

'She's young,' said Samantha. 'This is her time in her career, so maybe she should think about embracing that and be happy to be on her own and with her friends, and dating more casually. Maybe the timing's not right now.'

But if she is looking for love again, the matchmaker suggests that she try choosing some one who is successful without being famous. 

'If she could find someone who complements her in some of the ways that Calvin did and maybe isn’t in the spotlight, they wouldn’t have to deal with the challenges of both their situations. Someone who is successful, but maybe more low key.,' she said.