Well she was a really hard to get type. Even in a relationship, if I put my arm around her waste, I could feel resistance. (Just body resistance) Prior to the relationship if I did it, she would be like "no no no, get off me" (Verbal and body resistance). I would have to neg her or something before I could do it. I only dated her for a very short amount of time, the furthest we went was kissing.

it sounds like what you need is a good change of pace. Change up your frame, i know youve known her for quite a bit but she will catch on immediately and in her mind it will qualify as "theres a side of you she hasn't seen in a while" or just plain hasnt seen. Go about it all differently. Don't be too dramatic, dont overthink it, as your mood changes so will the mood between you. sometimes in order to get over a bump in the road you should just ignore the bump altogether, before you realize it you and her are joking around and having fun or something and shes forgotten all about it. When she brings it up again just quickly sort out the issue but the more time you spend dwelling on this (so to speak) the more your relationship is gonna go to shit.

By the way man, "hard to get" is a flirting technique. Theres no such thing as a hard to get woman, only a woman with whom you have to try a different approach. If shes rejecting your affection just find a different way to express it.