What does it mean when you have a repeating dream that your boyfriend chokes you?

It seems to me that your subconscious is telling you that you need to get out of this relationship. You may already know that this guy is bad news, but for some reason you are not paying attention to your own better judgment. So your subconscious - your soul, your spirit - is telling you in no uncertain terms that this boyfriend is going to hurt you. You know this better than anyone else. So stop kidding yourself and do what needs to be done.