Lunch lovers! Gigi Hadid and Joe Jonas unleash some serious PDA after grabbing a bite to eat 

After a very big night celebrating Kylie Jenner's 18th birthday, obviously these two need a little more low key one-on-one time.

However, while Gigi Hadid and boyfriend Joe Jonas wanted a slightly quieter activity, there was no turning down their affection for one another in West Los Angeles, California, on Monday.

The pair - who kept their relationship under wraps for some time - could not help but get up close and personal after they enjoyed a lunch date.

Scroll down for video 

Loved up: Gigi Hadid and Joe Jonas enjoyed a lunch date in Los Angeles, California, on Monday

Loved up: Gigi Hadid and Joe Jonas enjoyed a lunch date in Los Angeles, California, on Monday

Heading back to Joe's car, his model girlfriend threw her arms around the 25-year-old musician's neck.

The taller model could not help but use her height advantage to nuzzle against Joe's forehead and playfully whisper in his ear.

For their lunch outing, the 20-year-old beauty dressed down but looked great as always in an all-black look.

Snuggle session: Heading back to Joe's car, his model girlfriend threw her arms around the 25-year-old musician's neck

Snuggle session: Heading back to Joe's car, his model girlfriend threw her arms around the 25-year-old musician's neck

Keeping it simple: For their lunch outing, the 20-year-old beauty dressed down but looked great as always in an all-black look

Keeping it simple: For their lunch outing, the 20-year-old beauty dressed down but looked great as always in an all-black look

The ensemble featured a pair of tight black leggings which she wore with a long sleeve black sweater and a pair of matching sneakers.

The monochrome outfit provided the perfect contrast to the style star's voluminous golden locks which cascaded haphazardly around her face.

Joe also went for a casual look, throwing on a pair of black jeans with a white T-shirt and a denim jacket.

The former Jonas Brothers singer added a pair of white leather sneakers and reflective sunglasses. 

Sporty chic: The ensemble featured a pair of tight black leggings which she wore with a long sleeve black sweater and a pair of matching sneakers
Sporty chic: The ensemble featured a pair of tight black leggings which she wore with a long sleeve black sweater and a pair of matching sneakers

Sporty chic: The ensemble featured a pair of tight black leggings which she wore with a long sleeve black sweater and a pair of matching sneakers

Casually cool: Joe also went for a casual look, throwing on a pair of black jeans with a white T-shirt and a denim jacket

Casually cool: Joe also went for a casual look, throwing on a pair of black jeans with a white T-shirt and a denim jacket

Date date: After a very big night celebrating Kylie Jenner's 18th birthday, obviously these two need a little more low key one-on-one time

Date date: After a very big night celebrating Kylie Jenner's 18th birthday, obviously these two need a little more low key one-on-one time

Despite perhaps nursing sore heads after a big night out for Gigi's pal Kylie's 18th, the couple seemed in good spirits laughing their way back to the car.

The pair have been inseparable from since the hot couple got together in May, shortly after Gigi split from long-term love Cody Simpson. 

While Joe enjoyed lunch with his lady, a solo Nick Jonas was spotted at the airport.

Reportedly Gigi played cupid with her beau's brother setting him up with Kendall Jenner. 

Meanwhile, across town: While Joe enjoyed lunch with his lady, a solo Nick Jonas was spotted at the airport

Meanwhile, across town: While Joe enjoyed lunch with his lady, a solo Nick Jonas was spotted at the airport

New lover? Reportedly Gigi played cupid with her beau's brother setting him up with Kendall Jenner
New lover? Reportedly Gigi played cupid with her beau's brother setting him up with Kendall Jenner

New lover? Reportedly Gigi played cupid with her beau's brother setting him up with Kendall Jenner

The comments below have not been moderated.

The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline.

By posting your comment you agree to our house rules.

Who is this week's top commenter? Find out now