Bradley Cooper admits he's a romantic in the newest issue of Parade magazine.
"The truth is, I got it first from my parents, who've been married since 1963. I got it from them and from my grandparents, who are still together," says the actor, 34, who's dating Renee Zellweger. (The two were spotted kissing in Spain in early August; the next week, he took her to his Philadelphia home town.)
"I grew up in a very old-fashioned Roman Catholic, Italian-Irish family in Philly. Now my parents have evolved into completely different creatures, in terms of their marriage and the roles of the man and the woman," he goes on. "And I think that's great, but it's still romantic."
Movies and TV have also "influenced" the way he acts while in love, Cooper says.
"You sort of figure out that you don't need to replicate what you see. In a relationship you want to treat people the way you want to be treated," he says. "And, you figure that out after sussing through all these ideas of how love is supposed to be."
The star of All About Steve (out Friday), also opens up about his scenes with costar Sandra Bullock -- who went nude in her last romantic comedy, The Proposal.
"I don't feel cheated that Sandra Bullock kept most of her clothes on with me. At least we got sort of a love scene...I still made contact. Actually, Sandra was attacking me physically in [one] scene," she says. "There's just something in her eyes when she's on top of me saying, 'I'm going to eat you like a lion,' that's so funny. But I wouldn't have minded going a little further."