Tell me the truth

My boyfriend is trying to convince me that bad things happen to guys when they don't have sex for a few weeks or more. He showed me an article online saying it can affect mental things and make stress harder to handle and stuff like that. Tbh I find this hard to believe because there are plenty of guys out there who haven't had sex in a while.

Please help me out and let me know what's true and things I could tell my boyfriend.