This is excellent advice.

To address the other point about staying together and my hand being forced by meeting someone else, that's already happened twice. I've been through two very bad infatuations which I never let become anything more than secret crushes. They eventually passed - more or less. They will never completely go away. (I still have a place in my heart for a high school crush for that matter.) But I don't think about these women night and day anymore. The worst crush I had lasted three and a half years, until life circumstances made it so I didn't see this woman anymore.

Anyway, I know I can conquer infatuation without being unfaithful. Nothing will force my hand. Things may suck for a while, but I know I can get over infatuation eventually.

It's certainly possible that the best thing to do might be to just raise my daughter and reassess things when she's independent. I'll be in my fifties. Maybe by then I won't care anymore.