I am having a fling with my guys friends wife. She turns me on. She tells me no one turns her on so fast or makes her so wet but it drivers my crazy that her husband always comes first event though I would do anything for her. I do not want to leave my Guy like she will not leave her husband but I do not know what to do about my feeling for her. I love to be with her. Please help me!

Don't let Lust fog your vision of Love. Good luck

Yea, I'd have to agree....just lust.

My opinion is this....its just lust
If there are no expectations from both of you then you stay but if you want more than sex, then you better start running. I have been there, done that, and it was not a healthy relationship.
Good luck and take care.