The former couple were pictured leaving the Griddle restaurant in Hollywood on Sunday afternoon (29 March) after photos surfaced of them sharing a kiss backstage at American Idol.
Casper had told E! News earlier this month that the pair were just good friends, saying: "We've got a lot of ties. We're very close."
But recent photos would suggest otherwise!
J.Lo and professional dancer Casper split in June 2014 after two and a half years together, with a source telling People: "The relationship had fun its course."
Earlier this year, Jennifer told People that she wanted to focus on herself after splitting from Casper, saying: "I had to make a commitment to myself to be alone: no flirting. No possibility of anything. No boys in any way, shape or form. I said, 'I'm shutting it down.'
"I always found my comfort in another person. Instead of giving myself time to heal and be on my own, I was so afraid to be that I was always like, 'Okay somebody else just come in here and help me forget I'm in so much pain.' "
Jennifer has twins - Max and Emme, six, - with ex-husband Marc Anthony.
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