I'm trying with my best friend. He's really good at rubbing me off and hits the right spot but I just end up cumming REALLY hard and while he's rubbing my g-spot it feels too good to the point where it's uncomfortable and after an hour I tell him to stop. Yes he has some great endurance so I really want to be able to do this with him. But it hurts! I can't relax when he's doing it! Im thinking about telling him to ease off when he's doing it but judging from the videos I've seen he's the one doing it right and I'm just tensing up. how do I fix this?