orgasm eating out

Sooooooooo... my new boyfriend has eaten me out several times but I never seem to orgasm so usually just push him out of the way and finish myself off. I feel so broken but he does suchhhhh a good job so I don't know what's going on with me. Any suggestions?? He and I are so comfortable so I'll tell him anything in all honesty and he does the same but everytime I give him head, he orgasms. It feels so unfair. Any tips that have helped you guys reach climax that I can tell him about?????