Mark I think you are half and half about your W. You aren't attracted to the person she is, and also you are protecting yourself, pushing yourself away from her to save your sanity. Remember that hot pan? We have touched it so many times, knowing its hot, we don't want to even be near it now, we know it hurts....
You know, as she walked out the door this morning, she gave me a nice, friendly smile. Subconsciously, I thought, "Wow, that's very nice. I like that."
But you know, I can also get a nice, warm, friendly smile from somebody who won't cheat on me...