I'm pro-choice, so if abortion is the only possible option and you're both willing then I'd say go for it. And it actually isn't a breathing heart, it's just an embryo. And would you really beat a girl's ass for having an abortion? Because it's always up to them, not the guy. I'd beat your ass for being a girl-beater.

But back on topic, there is a chance that she could get pregnant. If semen comes in contact with the vagina then it can get to the egg. When was the last time she had a period? Make sure she gets birth control. And go with her to a doctor, it's confidential, and just talk to them. You don't have to get an abortion, just discuss it with them and find out all the possible options. Do not force her or pressure her to abort if she does not want to. Suggest adoption, but be there for her, and if you aren't in good with her parents by now, I suggest you start kissing major ass.