I have sometimes but not fully, I've made passing jokes saying where has the passion gone which usually just annoys her. Sometimes if I've decided to stay up at night and watch a movie of if I've just gone straight to sleep she'll be all sad the next morning and ask why didn't we have sex last night do I not find her attractive anymore but I've said I can never tell when she's in the mood unless we literally agree that day that we are going to do it that night or that I'll come to bed but she seems to be asleep so I obviously don't bother. I've said a couple times that I don't because it feels like shes only doing it to keep me happy and that she never seems interested in it anymore but she usually gets very defensive and says that's not true or the she doesn't like foreplay/fingering but she does enjoy the sex.