It looks like Smart has visited Lopez more than once on the set of her new show

By Adam Carlson
Updated June 06, 2015 10:25 AM
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Credit: Splash News Online

These two just keep everyone guessing.

Jennifer Lopez was seen sharing a quick kiss with former flame (and current #mancrush) Casper Smart while he visited her on the set of Shades of Blue in New York earlier this week.

The on-off pair have remained close after their summer break-up.

A Lopez friend told PEOPLE last year, “Just because it ended didn’t mean they had to be enemies. She cares for him very much. He’s a good guy. He’s really a very good, stand-up guy.”

Smart, 28, has been visiting Lopez, 45, on the set of her new police drama, Shades of Blue, judging by their smooch and shots of them holding hands Thursday.

Watch: Melissa McCarthy Chats with PEOPLE’s Jess Cagle About Working with Jason Statham

Lopez would neither confirm nor deny the speculation during a recent sit-down on The Ellen DeGeneres Show.

“Yeah, yeah. I’m kind of not [single], but I kind of am,” she told the host.