Husband probs... help

Does anyone else have this problem with their husband?... so tonight (not the first time) my husband asked if it was okay if he masturbated... While lying next to me... I feel as if I wasn’t good enough?... we’ve had this conversation before and I told him how it makes me feel insecure.. but here we are again... now I don’t know if he’s cheating and no Longer interested in me sexually, or if my pu*** ain’t good anymore, ... and he gets all offended when I ask.. idk what to do anymore..