I won't let my bf go down on me.

Alex
My boyfriend is offended I won't let him go down on me. I'll go down on him all day but I don't know that's really vulnerable for me and the idea of me getting pleasure don't sit well I guess. I'm so much more engrossed in his pleasure that I could care less about my own. I can tell though it makes him so upset that he never gives me an orgasm, and doesn't realize to me it doesn't matter I give myself 5-10 a day like I'm good.   How do I make him realize it's ok? Or how do I just let it happen??