For me I'm the one who is not into having sex so much. The reason is not because I'm unattracted, just that I'm so tired all the time and have a low libido. I'm in my late 40s and husband can't keep his hands off me. I'm not attractive or thin (almost 190 pounds and never considered myself to be pretty - so its not like I'm a young hottie), but he's always got to be touching (private areas). He wants sex all the time. A few years back I heard of some vitamins to improve the libido. Never did take them, just forced myself to want to do it more so we wouldn't be arguing. I'd research into low libido for men because maybe that is what it is. I think my hubby bought some pills through GNC (whatever that health place is) that increases sex drive. So, I'd check out the libido thing or come out and ask why he's not interested so much.