Well...I'm an idiot.

I am currently in uni and I'm living in an student accommodation place. It's not exactly on campus, its about a 15 minute walk away but its essentially the same thing. I've been here for a month so far and I already have a really awesome group and they all love to party which probably isn't good for uni but anyway... One girl in the group is Bec. She's 22 and she is really awesome. We get along pretty well and she is pretty fun to hang out with. Yesterday her parents and brother came to see her (because, like most people here, she has moved interstate for uni). So we were all watching Mean Girls because its an awesome movie. There were probably about 10 people in the room, 5 of which were on laying on the bed. My friend Becs little brother Jordan just happened to be laying between Bec and I (I was on the end). Anyway, he did the whole rubbing his hand up my thigh sneakily and was holding my hand at some points... He even kissed me on the head a few times. He tried to kiss me on the lips about 5 or 6 times but I kept turning away because he was my friends little brother, and not just any friend but one that I have to live with for another year

Then we went to maccas.

Now I don't drink and basically everyone else there was drinking so it isn't something that goes unnoticed. I was walking alone with Becs little brother. His cousin and a guy I live with were just ahead, we had lost the rest of the group because Jordan needed to use my bathroom and we assumed they had left without us. Anyway, he was asking me why I don't drink and do drugs and all this shit and it ended up with us talking about how we both have depression and all this shit. He even showed me how he had cut himself and asked me not to tell his sister.

When we got back he came into my room and we started watching Serenity...for about 30 seconds and then we started hooking up. And now I don't know what to do. Bec isn't an idiot and possibly already knows. On the off chance she doesn't then I really don't want her finding out. I am just freaking out that she will get angry at me if she does find out. I have no idea what to do...I have to live with her for another year and I really can't afford having her hate me because we hang out in the same group. So basically I'm confused and an idiot and I hate myself.