While having sex with my boyfriend, he happened to look down and saw a drop of blood near the opening of his penis. I got scared thought it was me but then he said he had felt something when I was on him (while he still had his pants and belt on) fooling around before the sex. He said it was a sharp quick pain and thought it had been pinched real quick so he didn't mention anything to me. Now he says when he masturbates, he doesn't feel the 'build up' he always felt before ejaculating. He feels, but just not as intense. Could we have damaged something?? :S although it sounds pretty obvious but if so, does anyone know what it is we could've damaged? Thanks in advance.