Weird, my ex had endo as well… Didn’t want sex for a long time, and I was doing my best to be understanding and not pester her… Then she unexpectedly ended up in the ER with extreme pain and heavy bleeding, bad enough she was on morphine and needed a blood transfusion… It took months, but I eventually found out she had cheated on me with our son’s best friend’s dad, and that apparently triggered the event. Hence why she’s now my ex.