My husband is not motivated to have sex either and refuses to take Viagra or anything else. He is also taking blood pressure pills. I have discussed with him about other ways to have sex that don't involve penetration but he is not interested.
To answer your question "Any ideas?"
I have always pleasured myself with orgasms except in the last 5 months. Coincidently Testosterone was added to my hrt and I was able to orgasm again. I also added a vasodilator cream and it made it even better. I don't know if my problem is something you experience but I would tell you to enjoy yourself without him even if he does not want to participate.