Affleck's Love Scenes With Gwyneth

Ben Affleck didn't mind doing love scenes with ex-girlfriend Gwyneth
Paltrow on his latest movie BOUNCE (2000)- because it was nothing
like making love to her in real life. AFFLECK insists jumping into
bed with Paltrow on set didn't stir up any memories of their past
relationship. He says, "It was a little bit awkward because we
weren't together but no more or less awkward than with someone you
don't know at all, who's sort of straddling you with some tiny pad
shielding her private parts from yours. "It's really helpful, but
not in the way that you think, not in a literal way. To be doing a
love scene in a movie has much more in common with another scene in
a movie than it does with the time you actually had sex. "You're not
thinking, 'Oh this is just like the time we really did kiss each
other.' It doesn't work that way."

http://us.imdb.com/WN?20000918#10