Sex - detailed - help me!!

I am married and our sex life is good, but I feel like simetimes he is selfish in bed. It's the second time this week that he came and I didn't. He didn't even bother announcing he was cumming so I could try to do so... Also, he loves it when I go on top, but he doesn't go on top too much, he says it's cause he cums too fast, he can't hold it. But I would like him to go on top more often and I think he could learn how to hold. I hate that and he knows, I do everything (really, I improved a lot) to please him in bed, and when he cums like that and I don't I feel like he is only worried about him and I'm like a sex doll or something, that is there just so he can get some pleasure and that's it. I complained last night and he gave me my vibrator (I have one). I am seriously so mad that I even thought about cheating. That's not what I'm going to do, but I'm really unhappy about this.