Long distance relationship problem.

Hi. Im in a long distance relationship for a while now and ive learnt that my boyfriend whos almost 18 doesn't masturbate and never ejaculated conciously. He is different than any other guy i know but it kinda makes me worried that when we finally have sex he wont ejaculate. I asked him to try masturbation and he did, but it didnt work since it just turned him off. He gets turned on like a normal guy and likes talking sex but im just paranoid. And yes he is a virgin too and im not. What do I do? Could anyone tell me their thoughts on this situation please ?