To give a little more detail. The first time we slept together I put a condom on and lost my erection. I was embarrassed by this but she was ok and understanding. The next weekend we had sex and I didn't use a condom and I was fine. She and I have had sex where I did ejaculate on several occasions. Last week we were together and I lost my erection and it came back a few minutes later and we had great sex. Last night she was tired so we just went to bed. In the back of my mind I thought it was a good thing because I didn't want to have any sex issues. All day today I kept thinking about if we had sex tonight I didn't want to have any issues and sure enough I did.
I'm completely frustrated.