Sorry if this question comes off an inappropriate, but I'm very troubled that I may have a sexual problem and I need feedback. In a couple of my relations I've had, my girlfriends offered to give me a handjob and sometimes, they don't do it right and I fail to ejaculate. Sometimes, I'm about to orgasm, then they get too rough and tug and pull or stop and it ruins everything. So, someones I can't ejaculate if they do it wrong. However, if I take over and do it myself, I ejaculate very quickly. All these girls claimed that they NEVER had this issue with guys they gave handjobs to in the past, so now I'm worried that I could have a problem.
Is this really a rare problem as these girls claim it is? Do I need to seek some sort of treatment or something?