"At the end of the day we're just ordinary people, and it didn't work," Hartnett said in a subsequent interview with the She went on to marry Ryan Reynolds in 2008, and the two split in 2011 after three years of marriage.

He remarried Blake Lively in September 2012, and the two share a 15-month-old daughter.

PHOTOS: Costar couples "I think it’s a respectable way of going about it,” he said of dating his costars.

Sometimes that had consequences that were just awful for everybody involved. Everybody makes mistakes dating people they work with." "They’re whom I’m attracted to," Hartnett said of his many A-list exes.

"I’ve met very important people in my life doing films.

"I think it’s a respectable way of going about it,” the actor told back in April.

PHOTOS: Celeb couples, how they first met But while dating co-stars hasn't always been successful for Hartnett, he did give a hint during that same interview that his relationship with Egerton was shaping up well.

actor, 36, who was once notorious for romancing his costars , told the mag that doing so has worked out in his favor — for the most part.

He's been linked to Scarlett Johansson, Rihanna, Amanda Seyfried, and now the 25-year-old English actress Tamsin Egerton. If you want perfection, you're on the wrong planet. Finding people whose imperfections fit with yours, and vice versa. To avoid paparazzi we'd get two cars going different in directions. I have a tendency to romanticize things way out of proportion. Who's able to see the stark reality for what it is. But I've dated a couple girls who'd gone on meetings with Warren. I hope I'm not talking out of turn, but, you know, he's monogamous and he's in this relationship with his wife and obviously they have kids and they're very happy. I meet girls that I really think are interesting and have a coffee and talk about work and it's great.

This month, Hartnett makes a triumphant return to form in the creepy-cool Showtime series Not exactly, but it was a happy coincidence. [Laughs] You can make a lot of enemies in the business that way. and sometimes I was getting in the trunk of one of them to get from point A to point B in Los Angeles. I'd always wanted to take some time off and go home. I've heard it said many times that hindsight is 20-20. Alan Alda and I did a movie together a few years ago. One of the best things I've ever heard about marriage—and I guess monogamy comes with marriage—he said, I've been married to a different woman every five years and she's been married to a different man ever five years. We've had to learn how to live with each other at times. But we just have to learn to love each other again.