Please help me interpret this dream. It really means a lot to me and I need the answer fast! :)?

Well, this is tough because sometimes dreams are wants, but many times they are fears as well. Perhaps for some reason your girlfriend fears this person for some reason. She also may be dreaming of you leaving her and never wanting her again. Sometimes women fear things like this when they aren't sure about commitment for there significant other. And dreams show fears in funny ways. I wouldn't worry to much about her wanting to hook up with this guy. It sounds more like a dream fearing your loss. i hope that helps