I... Honestly don't know. I'd suggest that the answer is within you somewhere... It is just a process of drawing it out of you really...

Hmm.

How were things with your ex when you were together? Was the sex great then or did you have performance problems at times?

How come you guys split up? Was it her decision or a mutual decision or what?

I guess it could be that you guys were really compatible in a way that you aren't with your current wife. Or... It could be that something else is going on.

How did things use to be with your current wife? Did the sex used to be good?

When did your performance problems start? Before or after you slept with your ex?