Not feeling affectionate..but very sexually frustrated.

My husband is very affectionate. He's always wanting to cuddle and practically lays on top of me in bed, nearly sits on my lap on the couch, etc.

I used to love it, and I still do for the most part, but lately I'm just not into it. It kinda bugs me honestly. Like, he'll wake up before me because he works at 8 and I work at 11, and when he goes to leave, he'll seriously lay across my whole body to say goodbye. I feel terrible about feeling this way, but I've just been so irritable lately.

The thing is, it doesn't apply to sexual stuff. In fact, my sex drive is 10x higher than his. If he'd let me, we'd be having sex every day, but it's usually more like once a week or less.

I guess my question is, how do I talk to him about this? I know I need to be honest with him, but I have no idea how to go about it.