I don’t know what to do

My boyfriend gets in moods that all surround with whether or not he gets to have sex with me or I give him a blowjob. I probably give him head or fuck him every other day, sometimes 3 times a day or even when I’m sick! He acts like it’s not a big deal at first, goes in the bathroom to rub one out which is fine with me, but then comes back and completely ignores me, doesn’t say anything to me at all even when I try to talk to him and it hurts my feelings. It makes me feel like he is only happy to be around me when I’m giving him pleasure. I said this to him last night and he told me to shut up. This morning he got up and left without saying goodbye or I love you. I’m sitting here at work crying because I don’t know what to do.