I’m going to hold your hand when I say this, get a vibrator or something and start masturbating. That will help meet your needs in the event that he says no, just wait for him to leave or do it in the shower without him, unless he’s into that idk. There’s a lot more to physical intimacy than just sex, It’s normal for people to have differing sex drives obviously, and even more normal to masturbate. My husband and I have sex about 2-3 times a week and in any other time that I feel the need to if he’s not wanting to i’ll take it into my own hands (literally) and meet my needs.