that's kinda where I am at after marriage of 33 yrs. the wife has gotten pretty chunky (fat) over the last few yrs. it's a physical turn off. she has told me we are too old for sex. I told her maybe she is, I'm not. I have mild ED. I get hard, not rock hard. but I got Viagra. I got Cialis. every once in awhile she'll want me to fuck her. I'll mount her, and start pushing. it's not easy, her belly is in the way, and she likes me deep in her, and that is very difficult to do. i do my best, but if I think about it, or get a mental picture in my head of what I'm doing, I'll start to lose my erection and I just get off her. it's sad, cuz she was smoking hot at one time, gave me 3 kids and still looked good, and then at some point said fuck it. it's sad cuz we had great sex for years. it was an "area" we never had any problems in, we were damn good at it. she tells me she's going back on weight watchers and that's as close as she comes to that. I think she just says that anymore thinking that she is fooling me/appeasing me some how. she eats fast food at least once a day, no exercise, doesn't follow Dr's orders.
Personally, I'm not really convinced I have an ED problem. I think I have a fat wife problem and I'm not turned on. I know a lot of people, some of them women, and a few flirt with me. some more than others. and altho I remain faithful to my wife, I have had some gals hug me, even kiss me after a fun evening of just hanging out, having a few drinks, and my cock jumps to full rigidity.