All I can say is "WOW!"...........it's been a LONG ass time since I've read anything quite like this much less seen some riled up members. Papaki, dude, if you're hurting her because your forcing your dick in further than she's comfortable with, that's pretty messed up man. Sex is supposed to be enjoyable for you and her. It really does sound like you enjoy causing this woman pain during sex, which I suppose if the two of you are into that sort of thing, then I guess your doing a great job. BUT, since you yourself said she runs from you because of the pain you cause and you run after her? Again, that's fucked up.
My girl and I do enjoy a certain "fantasy world" in the bedroom but it's all kept within mutually comfortable areas and I have never EVER caused her any physical pain of any kind during sex. If a woman tells you it hurts, then you stop dude. You don't chase after her and make her take it more...............that is sadistic. Are you and she into bondage or s&m at all?