I'm having trouble making my boyfriend cum

I've started dating a new guy, we've been together a few months now and recently we had sex for the first time. I knew that he was a virgin before me, he's not the first person I've been with though. He's lovely and I really like him but for some reason I struggle to get him to reach climax whether I'm using my hands, mouth or were having sex. I have managed it a few times and other times I let him finish himself of while I do the same but I don't always want that to be the case. It makes me insecure to think that that I can't get him to cum because to be honest I've never had this problem before. My old boyfriends were much easier than this. I don't know if its just going to take some practice or if he's nervous when it comes to the intimate stuff but it's really starting to worry me. I don't know if anyone else has had this problem? or has any ideas as to what I can do? I don't really want to say to much to him about it because I think he feels self conscious about it.

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