the other day i was about to have intercourse with a girl i just met for a day. when she told me to stick it in her. she was forcing it and grabbing it inside her vagina, but my penis wouldnt get erect. i didnt understand this if i masturbate up to six times a day and im straight. it was in my friend's pad, in the living room, so alot of things were running through my head. and the more i thought about it the more it wouldnt go up. is something wrong wit me?