He's killing your desire for sex with him.
They say they need intimacy to feel connected to you and that intimacy is very important to them/the marriage and that makes you feel bad as you hate to think you're depriving him of intimacy.
What they actually mean by intimacy is sex. Sex doesn't equal intimacy. An intimate, connected bonded couple both want to have sex with each other. He's not being intimate with you, he just wants sex.
If he was to try being intimate with you, i.e. meaningful conversation, affection with no strings, genuine love and care shown for you purely to show you love and affection, you might just want to have more sex with him.
The more he whines and sulks about you not giving out, the more your desire will die (for him).
I cannot understand why so many men, even the intelligent ones, can't grasp this.
They claim their wives change from wanting sex early on to drying up, when I think it's them that change. They stop showing their wives any love and simple, easy no strings affection and just expect them to keep them happy in every department including emptying their sack regularly. That is a turn off!!.
Keep having sex you don't want will put you off even more. It's a vicious circle. He needs to stop pressuring you and start loving you.