I started seeing a woman I've known for years. I am very attracted to her, but "playing it cool" because she just ended a 5 year relationship. I've been painfully single 4 years. Last night I had a couple dreams about her having sex with other people. It was like she had already cheated on me, and we haven't even began a monagamous relationship. Today, for atleast 2 hours now, I've been obsessing how there is no way I can be with a woman because of these thoughts. How do you deal with this. I have been alone for so long, I need to try a relationship again, but this girl is so beautiful and desireous, that I can't imagine her wanting to be with me. I don't want to stop it before it starts, but these thoughts and emotions are not healthy, and I would rather living with a consistant bad mood, rather than live this roller coaster I've lived again for a week, just because of one good date with a girl.