I’d think she’s been with another man or woman that loves it hard or she wants you to take control of her forcing her to be your slutSadly, I'm 60 and my wife is 63 and my wife could care less if she had sex ever again. I'm lucky if I can get a blow job or hand job once a month. But she will really torture my nipples by hard sucking and biting and chewing on my nipples. And I don't mean just nibbles. She bites them and pulls to stretch them with her teeth. They are sore to the touch for hours and I love it.