Kick her to the curb man, ignore here and pretend to lose interest in her. Right now she knows you are wrapped around her little finger and you are a safe fallback plan in case she can't find anything else out there. Get involved with some group activity of interest(hobbies, sports, etc.), you will meet new people through that, and possibly even meet the girl you are supposed to be with, one never knows. There are many fish in the sea my friend.