Was Giving my man Oral when..

My man and I were doing some things I was going down on him, and he proceeded to push my head down(deeper) and he knows I don’t especially like that. I do have a gag reflex and already told him before I started I wasn’t in the mood to swallow tonight just feeling off. So I established that already, well I thought. And then right as he was going to be at the peak of it all he was pushing my head further down and I had to fight to get myself off of him….this isn’t the first time and then he comes in the bathroom because I’m beyond furious with him and I was already in here…tells me he’s not going to ask for head anymore and that I can go suck someone else’s dick because I won’t do it his way. I love this man but there’s things I won’t put up with. Just need someone to give me some advice because I feel alone and depressed…like I’m not enough for him…