You came to the right place, hun. Unfortunately we can't give deffinate answers, though there are many things which we have learned are for certain, and there are many here far more versed than I in saying such things.
I have a bit of experience on both sides of the field as it were, but as i said, it wasnt as serious as others' situations have been. What I will say is when it gets to the point you mentioned... things will not get easier thats for sure. I know it hurts, i lost a very dear friend to World of Warcraft... to be replaced by some stupid game, sure doesnt feel good.
I suggest you confide in a close friend whom you can trust. You're going to need as much help as you can get. Best of luck to you sweetie. Hope it turns out for the best.
And remember. You dont have to put yourself thru somethng unnecessarily. Sometimes it takes walking away from them for a while for them to even realize anything's wrong.