Keeping it casual! Ben Affleck and producer girlfriend Lindsay Shookus leave NYC hotel as their romance heats up

By Dailymail.com Reporter

Published: 16:40 GMT, 13 September 2017 | Updated: 22:43 GMT, 16 September 2017

They enjoyed a PDA session during the US Open Tennis Finals on Sunday.

And on Tuesday, Ben Affleck and Lindsay Shookus were spotted leaving their New York hotel together.

The movie star, 45, kept a close eye on his girlfriend, 37.

Blissful: Ben Affleck and Lindsay Shookus were spotted leaving their hotel together on Tuesday in New York City

Blissful: Ben Affleck and Lindsay Shookus were spotted leaving their hotel together on Tuesday in New York City

Lindsay flaunted her toned pins in a classic black and white striped dress.

The pretty Saturday Night Live producer layered a black jacket on top while stepping out in classic white sneakers.

Lindsay, who rocked reflective silver glasses, opted for minimal makeup.

Ben kept it casual in a blue T-shirt with jeans, adding a deep green bomber jacket.

Keeping casual: The movie star, 45, kept a close eye on his girlfriend, 37, as they left their New York City hotel together

Keeping casual: The movie star, 45, kept a close eye on his girlfriend, 37, as they left their New York City hotel together

On Sunday, the lovebirds took in the Men's Finals at the US Open from the stands.

Lindsay munched on snacks while sporting a white blouse with fitted slacks and a star patterned jacket.

Ben wore the same bomber jacket and bearded look for the annual tennis tournament.

Taking it all in: On Sunday, the lovebirds took in the Men's Finals at the US Open while seated in the stands

Taking it all in: On Sunday, the lovebirds took in the Men's Finals at the US Open while seated in the stands

Beaming duo: Lindsay munched on snacks while sporting a white blouse with fitted slacks and a star patterned jacket; pictured on Sunday

Beaming duo: Lindsay munched on snacks while sporting a white blouse with fitted slacks and a star patterned jacket; pictured on Sunday

After watching the match, Lindsay and Ben headed to the Upper West Side to grab some dinner.

Lindsay is based primarily in New York City, due to the fact that Saturday Night Live is filmed there.

She has one daughter, four, with her estranged ex Kevin Miller; they separated in 2014 but never divorced.

Ben has three children with his estranged wife Jennifer Garner: Violet, Seraphina, eight and Samuel, five.

They were married for 10 years before announcing their separation in the summer of 2015; they both filed for divorce this year.

Time for a meal: After watching the match, Lindsay and Ben headed to the Upper West Side to grab some dinner; pictured on Sunday

Time for a meal: After watching the match, Lindsay and Ben headed to the Upper West Side to grab some dinner; pictured on Sunday

She's got a lot to smile about: Lindsay is based primarily in New York City, due to the fact that Saturday Night Live films there; pictured on Sunday

She's got a lot to smile about: Lindsay is based primarily in New York City, due to the fact that Saturday Night Live films there; pictured on Sunday

When they were in love: Ben has three children with his estranged wife Jennifer Garner: Violet, Seraphina, eight and Samuel, five; seen at the Vanity Fair Academy Awards after party in 2014

When they were in love: Ben has three children with his estranged wife Jennifer Garner: Violet, Seraphina, eight and Samuel, five; seen at the Vanity Fair Academy Awards after party in 2014