I'm fairly sure it's about aborting a baby that the protagonist made with a girl he doesn't really love, maybe just a hookup gone south. I can't really get all the verse's meanings down, but I think washing off the fake blood is killing the baby that doesn't mean anything to them, from the sex that didn't mean anything to them, i.e. fake cut, and the poor girl's pregnancy is really screwing up the protagonist's life ("bleeding all over everything I own").
I'm fairly sure it's about aborting a baby that the protagonist made with a girl he doesn't really love, maybe just a hookup gone south. I can't really get all the verse's meanings down, but I think washing off the fake blood is killing the baby that doesn't mean anything to them, from the sex that didn't mean anything to them, i.e. fake cut, and the poor girl's pregnancy is really screwing up the protagonist's life ("bleeding all over everything I own").