Women, I Don't Want To Mess This Up, I Really Need Your Help?

That's rough man. I don't know what to tell you. Usually girls that are engaged are pretty serious, and if they aren't and they cheat, then that probably isn't the type of girl you want anyway. The fact that she brought up her bf when you asked her out is pretty indicative that she isn't into you though. I am not trying to burst your bubble, but I don't want to see you pour your heart on on a girl that is going to smash you man.