Do older couples routinely become unattractive to each other?

My boyfriend was asking me about this. He told me he’s worried if he gets married, he will lose attraction to his wife as she gets older, and vice versa. Then no more sex and things stagnate.

I didn’t really know what to say. It’s something I’ve worried about too. Does this sort of thing happen often? I get that couples get lazy, deny sex, etc. But even if both parties make effort to keep things fun, does attraction always fade away when people age? Do older couples ever find each other attractive?

Like my boyfriend, I’m not sure if I’ll want to have sex with a future, very wrinkly old husband. Maybe I will maybe I won’t. I hope I will!