The way I got into BDSM was. I had this girl friend. We were having sex once. This was about 5 years ago. She was on top. I was pinching her nipples. She said, squeeze my tits harder, the whole tit. She kept screaming more, more. Then she screamed loud, I stopped, she got right upto my face and said real soft, kinda sinister like, do you like it when I'm in pain? I was shocked. but after I thought about it, the more it turned me on. We later got into me spanking her, pulling her hair ect. She seemed to get off on the pain. but it was nothing major. Just us having fun during sex.