Re: My boyfriend comes fast and goes limp afterwards?
Oh gosh, don't feel bad, it's so not you at all! Your bf is having premature ejaculation. This is actually the most common sexual problem in men. I lot of men have this problem at some point in their life. Some men have it chronically but it goes away on its own in others.
If he has foreskin and his penis is too sensitive, he could try keeping his foreskin back for a while say 5 to 30 min a day for a few days. That will desensitize his penis from letting the most sensitive parts rub against the fabric in his clothes. (If his foreskin is too tight to do this, he would need to fix this first, but it has to be done very carefully. See the sticky thread on the Men's Health board Stretching To Fix Tight Foreskin (Phimosis) for more about this.)
If he's having ejaculation without orgasm, he might have an infection. A UTI or other infection can cause that problem. If it's very mild cranberry will help. But if there are any signs of infection (besides PE), He should see a doctor. There are other causes of PE that a doctor might easily identify.
The only warning about seeing a doc is I'd be careful to avoid falling for the circumcision scam if you're in the US. Some American doctors just promote it reflexively (even when it's a terrible idea).