lets see, just because im answering doesnt mean ive lost my sex drive.....we all go through periods of ebb and flow, but 40 is kinda young so some suggestions i have is various locations in and out of the house, fun role playing, could include dressing up, initiating more if you arent already, its exciting to be wanted, maybe renting some hot movies, massages are also a big turn on both giving and receiving......hope i helped