Problems in bed

Here is a question. I never had this happen to me, but my friend has. So I am no help; however, she has been involved with a guy for about 2 years off and on she had not seen him in about 3 weeks and he called to to stop by. Well they ended up in bed and during sex he got a "head rush" and had to sit up and relax for a while. He also, per her, was sensative in the private area and had some difficulting in coming to an orgasm. He told her it was because his privates are not being used as often as they should. She likes the guy and likes being with him but felt this last sex thing was because he really is not attrative to her anymore. I don't know anyone have this happen to them? I told her that at least she knows he is not sleeping with anyone..that is good eh?

He had just come from work, and was on vacation for 4 days prior. He had some difficulty with his ex-wife which resulted in him taking on a responsablity he did not want. That is all the history I know so far.