I have cum before, during 69. So has my partner. I keep working, although doesn't feel like work to me, it just makes me hornier if I am cuming and then it makes them hornier. A win win for everyone. I am not insensitive but I also don't worry about hurting my partner, I know what they like and also if they need to breath etc. the push me up and out, it has never been a problem. They are also VERY good at breathing through their nose! Good Luck!