I had a boyfriend before, (he's currently my ex) but I broke up with him for the reason that I always get jealous and insecure whenever I think about his exes. They are all pretty and rich, but me... I don't know, I just wanted to be at his level but I just can't. I know my reason is so selfish but this is what I really felt that I needed to let go so I can change myself for him. After 3 days of our breakup, I realized that there's a really empty space in me, that he and only him can fill. I decided to bring our relationship back but still, he won't accept it. What do think is the reason?