Some guys feel guilt or even worse, embarassment after having an orgasm.
Probably due to the refractory period, every man feels different after orgasming: you're no longer thinking about sex, you kind of switch off. But in my case, it can go as far as no longer finding the girl I had sex with attractive.
I feel totally relaxed; all you guys who feel disturbed need to examine your sexuality (as in what you're attracted to specifically, not just gay/straight)
LOL, another girly perspective but I tend to get very clinical and cold, rushing about trying to do something useful. The man just goes flop and chills out. I don't think he gets any odd thoughts.