Basically, you have to be better than her in whatever's really important to her. Then she'll chase you and put up with a lot bs. But if you're begging and too accommodating, she's going to feel like she's a princess and you're some peasant.
A lot of women want a man that better than they are. You have to be better or have better than her in whatever department that's very important to her. Whether it's money, looks, charisma or whatever. Smart chicks want stability and a great male figure. Usually ugly girls with money want a good looking dude foremost. Broke chicks want that paper. She just has to really admire something(s) about you. My last gf had looks and money, but was introverted. I'm decent looking, money str8, but she admire the way people responded to me.