My husband has no libedo.He is 61 take little blue pill when he thinks about it.Need some advise

If i don't ask for sex he doesn't think about it.He's been like this ever seen he retired 6 yrs ago& we moved out here 2 Arizona from Upstate,NY.We love it here be ever seen we got married 5 yrs ago.His has no libedo.Is it me :(.