No Sex Life

I have been with my husband for 19 years in the last 5-6 years we haven't had sex because he is on insulin and he can no longer get an erection. Yes he gives me oral sex and he makes sure that I'm sexually satisfied but it annoys me because I can't satisfy him, do you understand what I'm saying, yes I am enjoying oral sex yes I enjoy an orgasm but I want him to also have an orgasm.....HELP!!!!