A quick summary. I'm 37 but still young looking and still have a very good sex drive. I've have had many many partners and very good at maintaining long term relationships with my girlfriends. I currently have a girlfriend who is 11 years younger than me and she is beautiful. She started as my roommate and we were in a relationship within 10 days. Now we have been living together for 1 1/2 years.

Here's the problem. I absolutely for the life of me can't seem to desire to have sex with her anymore. Understandably, this is a huge problem for her. I'm not cheating and have never cheated on her. Let me say that this isn't the first time I've been through this problem. Pretty much since 1996, my relationships ended because of my "lack of interest". When I met this girl I told myself "if I ever lose interest in sex with her, I know there is something wrong with me". Well it's happened, many months ago.

At one point in my life I went 5-months without having sex with my previous girlfriend. Needless to say, she cheated on me and I didn't blame her. Coming up with exuses all the time is really beginning to become stressful, and I want to throw in the towel for that alone.

Now as far as love goes, to be honest, I'm not really sure I do. Regardless, is love really the culprit? Once lust evaporates and the infatuation is over, is it love which is needed to still desire sex with your partner? What about typical male hormones? After all, this is what she seems to think is all I need. I'm a man, she's a woman ( at least that's her thinking)

At any rate, this is an ongoing problem for me. I admit, I am addicted to the infatuation process. The idea of being with a new woman really strokes my ego and I am a very passionate person. I rely on my passion to keep things exciting, but my passion is gone.

Taking the train, limited express.