my wife and I have been together for 10 years and the sex the has been really good but then a few year ago it started to be to less frequent and more excuses started to come up. Now it’s once every few months and it has to be quick, with me on top and over really quickly. I’ve asked is it my appearance and if so I would change if she wanted me more muscular etc but she said it isn’t that. In the past she mentioned with previous exes she stopped fancying them and used to make up excuses not to have sex and would only have it minimal times a year. For me sex is a way of feeling connected and loved and not having it frequently makes me feel unwanted.