Possibly, Illuminated. That's something Garrett should definitely think about for awhile to see if it fits.
Also, there might be a case of you just being somewhat on the introverted scale of things. It seems like you go into relationships hot and heavy and then get burnt out by all of the togetherness and you not making time for yourself. You have to have boundaries to protect yourself, but you have to know your limitations, first. After coming out of a cult that told you who you should be, is it any wonder that you're not sure who you are and what you need?
Do you think taking some time to figure these things out might be helpful?
Have you ever thought of telling the girl you're not interested in a relationship at this time, but would enjoy dating casually? Honesty is usually appreciated.