Most Helpful Guy
If there is a family involved, always keep trying but remember that she won't want you back until she sees you as an attractive partner. Everyone (almost everyone) knows that the classic Nice Guy behaviors of showing devotion and being constantly available don't lead to a woman wanting to jump your bones.
Work on yourself (mentally and physically). Do things that make you happy and don't pass up opportunities to go out socially (or even on dates). The more she sees you changing and becoming more vital (like you were when you met her), the more she'll want you. If she doesn't want you, then you're totally prepared to get back out there and meet someone new.