Ashton Kutcher and Mila Kunis Caught Kissing (Photo)

Ashton Kutcher has more explaining to do regarding his love life.

Recently, he's been romantically linked to a number of female celebs, including Rihanna, when she was spotted leaving his place late one night. Kutcher has done his best to deny all claims, but he has a new situation to deal with.

Over the weekend, undercover paps finally snagged a photo of Kutcher smooching his close "friend" for over 15-years, Mila Kunis. The two Hollywood A-listers were spotted at a closing party for the upcoming Steve Jobs Biopic.

Witnesses say the alleged love birds were all over each other the entire night.

Are they really in love?