When I was 30, me and the girlfriend once did it 13 times in 24 hours. After that, she expected repeat performances. Yeah, no. Whenever I first start a relationship, it involves TONS of sex. I love seeing a girl limping around the house and wincing, while sitting down slowly and cancelling her spinning classes, for the week.
Wet doesn't prevent sore, just scuffing. One girl called it a "uterine bludgeoning". She loved it. I think she got off on the pain. "Ow ow owowow-- ahhhhhhh yeah." That first girl also could have continuous orgasms, beginning just seconds after we started. In my favorite position! She's facedown and I'm on top, behind her.
Unfortunately, she had a really bad habit that ruined the whole relationship for me. She could remember every word of any conversation, we had ever had. Not kidding. It was freakish and like any man, I can't be expected to keep my stories straight.