I have my own problem. I can keep thrusting for hours without ejaculation. Once a girl asked if I am a gigolo as I have her come time and time again.
My doctor said this is because I masturbate too often and your body get so used to it that become the only way to release itself.
It is very frustrating. Much like being extremely tired but just could not fall asleep.
All my partners will feel so tired without able to make me come.