Not to derail the thread, but why are you doing it if you feel it's dangerous?
Cos I thought I would be a cool girl and he (well each of the last 3 actually) asked nicely. And also had hopes that it might be fun. Kind of like talking myself into liking the cool music that everyone else was listening to when I was young. They were respectful and gentle (as it's possible to be), used enough lube to sink a battleship. Nice kind blokes all (I'm married to the last one) that I really fancied. So optimal conditions were in place and...it was still dull. Had an epiphany moment eventually staring at the crack on the wall thinking "Well, I've given this a fair few goes now- goodness knows I'm not a quitter- and it's still crap. Do you know, I think it will always be crap. I learned to ski and liked it from the start, I learned to drive- hated it to start, quite like it now. Anal sex- wanted to like it, tried it, tried it, tried it- no still crap. Sorry fella, the show is over. Not doing that again. Turns out vanilla is my favourite flavour and I'm OK with that".