You miss the point altogether. That is not the reason by far not. If I may, let me draw you a parallel. If you fill his belly without stopping he ll bust. One can only eat one meal at a time, no more.
Hunger stops when rationing stops.
When food is all over the place when one s eyes and mind get used to it, then it becomes normal. He passes it not even touching. It is the same with sex. It is fitting to say that love comes through the stomach, and our friend s belly is full, therefore nature takes its course. As long as he does not have a permanent girl he ll be anxious, hungry, insecure.