Mila Kunis appeared Monday on the "WTF With Marc Maron" podcast and revealed that she and Ashton Kutcher didn't date ? they instead hooked up for three months. They agreed that it was just for fun, but Kunis developed serious feelings for her former co-star. She says, "We were both seeing other people, so the second I started caring that he was seeing somebody else in that regard, I felt like I got punched in the gut, literally overnight.