I don't know what to do.

I'm friends with this girl shes 13& im 17. I go to her house a lot. and she has a brother my age. of course we go at it, but he has a girlfriend. should I continue?

um.. by "go at it" do you mean sleep with him? ew. have you no self-respect? the obvious answer is no, don't continue. he's taken, find your own guy.

well if you know that he is with someone then why do you do it. would you like it if you found out that your boyfriend was cheating on you. I say walk away before your problems reach the next level and his girlfriend find out ... hope I helped and need further advice fun mail me ~kaitlyn~

Dear fau,
first of all you should not have friends that young, and you are having sex with her brother when you go to visit her? Is that what you are saying? If that is the case you need to stop going over there, and of course stop having 13 year old friends. Time to take stock in your life and figure out what you want for your future and what type of relationships you are looking for and lets hope those are one that are a bit more respectful.
Sue...good luck