Is there any way to see if the girl is still a virgin? By looking at her face closely? Or any changes in her?

Why do men lose erections after they ejaculate?

Okay, so I keep hearing that for every 30 lbs a guy loses (actually I've heard other versions where it's 10 lbs, which just strengthens my opinion on the subject) his penis gets an inch longer. To me, this freaking REEKS of BS, but I have friends who believe it or aren't sure. I've looked everywhere and can't find solid information one way or the other. Experts seem to agree that the ONLY thing that can increase penis size is time, which would run contrary to this story. Can you confirm or deny this?