Have a FWB with whom I've recently become active sexually. Neither of us has had sex for a while. I'm mid 50s, he is late 30s. The foreplay side was all great and, bad though I know it makes me sound, I was really longing for a good hard shag. We've now tried 4 times and while penetration has just about happened, he's not able to thrust very hard, & each time we've had to stop before properly getting going. At times I've wanted to cry with frustration. I've done so gentle probing and it seems his foreskin (which covers the head of his willy and some even when erect) causes him severe pain when he penetrates me. Something possibly to do with his frenulum being too short. I don't want to give up on things yet, wondered if anyone had any experience of this and how it panned out?