I’m a male in my mid 30’s my partner is the same age. We Got together 3 years ago. At the start we used to have sex all the time now lucky if it’s once in 2 weeks. She knows when I want to have sex but pretends like she doesn’t we would go to bed and there would be no interaction at all. What has happened. Why has sex just vanished. We have had no major issues in our relationship. Silly arguments like everyone. We are engaged and in the final preparations for our wedding and future together but just seems like something is off. She’s not stressed or anything. I constantly feel like I’m doing something wrong. Anytime we do have sex now it feels like it’s only if I do something for her. I need advice.