I’m a 33-year-old, confident single gal who often dishes out dating advice to my friends. Over the past six months I’ve developed a friendship with "Mr. M,” 12 years my senior, and it became evident that we share amazing chemistry. I’m extremely attracted to him. Trouble is, I want to be in a committed relationship. Mr. M’s divorce ended badly, and he clearly harbors bitterness towards marriage; he also admits to having issues with even non-marital commitments. But he’s extremely fun to be around and we always have a wonderful time. On two separate occasions, after a long evening of dinner, wine and flowing conversation, we hooked up. I realize he can’t offer the relationship I want, so am I playing with fire by sleeping with him? By crossing that line have I pigeoned-holed us as "friends with benefits"? I thought I was long over my attraction to unavailable men. I am open to meeting and dating someone else. but I have such a weakness for Mr. M. Am I doomed?