Is it fair for him to do that to me?? :(?

We have been together for about 5 months now and he is my first boyfriend. He has had 7 girlfriends before and has had sex with one of them. I am still a virgin. I don't want to have sexual intercourse yet because I want to take my time. However, we do many other sexual stuff. I have been naked plenty of times before him and we have done many things. I love him loads and I know he loves me too. However, he hasn't managed to give me a single orgasm for the whole 5 months. I am 17 and I have am horny almost all the time and it's very easy for me to get orgasms with my vibrator. He has never gone down on me EVER. He does touch down there but only for like 3 minutes and then he dry humps me and climaxes. I have given him o-r-a-l plenty of times and I swallow too. I am willing to do anything to make him happy. And it is starting to bother me that he is not really making an effort. Is it his fault that he can't please me or am I too used to the vibrator? Is it fair for him to not to go down on me? :( Am I overreacting?