So, when this girl passed out, I took off her thong and put a condom on and began to have sex with her
Yes. That was rape.
i'm not sure if this makes me a horrible person or not?
Committing a crime does not automatically mean that you are a horrible person.
question is now, what do i do about it?
no way to contact her..
You resolve to never do it again, and you use the guilt that you are feeling to ensure that you hold to it.
ha why is no one fully reading my posts..
Because they are confusing walls of text. More paragraphs please.