i don't know. i do not know anything about your boyfriend's medical history or have any why of examining him but based on what you have shared he needs to see a medical provider to make sure that he does not have a treatable infection (epididymitis orchitis etc. ) that may be causing his difficulty.
why is my boyfriend having trouble ejaculating? . the last couple of months my boyfriend has had difficulty urinating and occasionally it will cause pain in his lower back until he is able to urinate then it goes away. he also has had difficulty with climax or ejaculation. there is not an issue with erection that works just fine he just can't seem to get off and because of this he puts in more effort which by the time (if he does) he ejaculates he is sweating so bad he looks like he just got out of the shower before he dries off. whats cause?