Josh Hartnett is breaking teenage girls' hearts around the world - by admitting he's in love.

The 'Pearl Harbor' hunk is revealing he's dating an old friend from his hometown of Minneapolis.

He says the relationship is an old one that he's rekindled, admitting, "I screwed up on my girlfriend with someone on a movie set and then we broke up. A while later after we became friends again she said to me 'I know why, I understand completely what it's all about, how hard it is to stay involved with someone far away when you're making a movie.'"

He continues, "She taught me the word 'communitas' which means a community that comes together to make a piece of art, then disperses. I definitely screwed up and now it's just a change in the circumstances. It's really tough not being with her to tell you the truth. When we see each other we can't deny our feelings."