no more sex..

me n my husband completely stopped having sex.. n it's not that I don't want it.. I try talking to him bout it cuz we use to do it regularly.. then within the last 3 weeks absolutely nothing. he won't touch me. he won't do anything that will lead to sex.. I try giving him a bj,handjob sending pics,walking bout naked, half dress.. getting on him naked and dry humping.. and yesterday I even sat down and spoke to him about. he didn't even notice that it's been that long... like nothing in his job change so he isn't stressed.. home life is cool nothing stressful happeing.. and no he isn't cheating.. like I'm just completely lost