Concerns that my fiancé and I are not as sexually compatible as we once were..

We used to be into it! But we also didn't see each other every day, after we moved into together it decreased a little, now sexual desire is pretty low. I tried buying cute panties for myself but for him if that makes sense, but when I showed them to him he said they're weird. Haven't gotten them or worn them yet, so maybe he will change his mind, but I don't know.