Some girls are born without a hymen, and others have their hymens broken from sports, horseback riding, using tampons, or during manual sex. While the hymen is often broken during a girl's first time having intercourse, there is a high possibility that the hymen will already be torn before that, or not fully torn after that. Every girl is different. So, the presence or absence of a hymen is no indication of virginity.

If the hymen does break during sex, most often there will be some bleeding, because the tissue has blood vessels in it. However, some women don't experience bleeding, and of course their hymen may already be torn. If she doesn't bleed, it doesn't necessarily mean she has already been devirginized.