Sexy Heather Graham says beau Ed Burns has some problems watching his girlfriend get all hot and heavy on the big screen.

"In some ways he finds it a pain in the neck," Graham says of her steamy love scenes with other leading men in movies like Boogie Nights and Two Girls and a Guy. "But on the other hand, it's probably an ego boost for him because everyone can see he has a sexy girlfriend."

Graham seems to have a somewhat easier time watching her actor-director beau heat up the screen. "It's kind of a double-edged sword," she tells TV Guide Online. "You don't want the person you love making love with someone else but you don't mind watching them on the screen because you're going to get them in real life. I like it because he's really sexy."

Graham tells us she and Burns were virtually inseparable on the set of her latest movie, Committed. "Ed was there every single day," she says. "It was kind of romantic but Lisa Krueger, the director, kept saying, 'Here we are doing a movie about this girl whose husband leaves her and you guys are this loving couple, hanging out every second you aren't on camera.' "

The lovebirds have even begun taking dance lessons together. "Ed saw a video of Swingers and he got a kick out of me swing dancing," Graham says. "He said, 'I'd like to try that.' So now we're taking lessons together, learning everything from the tango to the fox-trot."