How to tell your man he needs to last longer?

My man is amazing. We’ve been together for a few months now and everything is great. The only problem I have is in the bedroom. He never lasts that long, like maybe 2 minutes. I’ve watched him try to go slow so he could last longer but I don’t get off that way. Even then he’ll only last another minute or two. I don’t know how to bring this up to him without hurting him. I don’t know what he can do to help it but I’m going crazy without having some decent sex. Any advice?