I empathize with you on the sex getting rote problem. I get so few opportunities for sex with my LDH, I'm hesitant to suggest trying anything new because if it doesn't work for me I've wasted an encounter and if it doesn't work for him that's even worse. So, I have a whole mental list of "someday" things I'd like to try sexually. I think this is another area in which things are even worse for HD women than HD men because a lot of female fantasies involve being dominated in some way and it is pretty tricky to pull that off with a LDH.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver