From my perspective, he must enjoy doing it, why else would he continue to pleasure me if he didn't. And by letting me go to singles bars, and possibly having the knowledge I meet men I contact through the internet, surely he's giving me the go ahead to have extra marital sex.
He knows at his age, fifty one, I'm a good looking woman on his arm at business functions. He also knows whenever he can raise and sustain an erection, I do and will have full sex with him. But my husband rarely gets fully erect nowadays, and if anything enjoys eating out my pussy and ass more than he does fucking me.
More often then not, he'll wait up for me, I suspect knowing I've been out having sex with a younger guy. When I get home he's invariably naked on the bed playing with his small fat cock. I'll make him wait, brushing my teeth and having a wash. But I won't clean my pussy and ass. That's because each and every time I go out now for sex, he wants me to sit on his face as he licks and sucks on my pussy, clit and asshole.
Once I'm cleaned, usually after I've climaxed all over his face, he'll toss himself off and we'll get ready for bed. Nothing is ever said, and he won't talk about my sexual adventures. Yet surely he knows when he's eating me out, he's also eating out a man's cum too.