My boyfriend can’t cum during sex

Katie

I’ve been with my boyfriend for over a year and he has only been able to finish a handful of times during sex. He says that the sex is good and pleasurable and he gets to a sort of tipping point of where he is going to finish but he can never get over the edge. He can finish within minutes when he masturbates after sex. It is something that really upset him and he can get frustrated. Does anyone have any tips or tricks? Anyone with experience of this and know how to fix it?