I know I'm gonna get blasted about this, but this is a serious problem for me. I simply can not cum. I'm only 41 years old, so this should not be a problem, but it doesn't matter if I do it manually or with a partner, Mr. Happy does not want to give up the juice, if you know what I mean. What's wrong with me?
Yes, I'm completely hard, and satisfy my woman repeatedly, but I can't do the same for myself. ....WTF?
If you're serious...then talk with a professional. I don't know if anyone here is qualified to help you. But there are people and meds who/that may. Good luck.