What can you do when your bitter partner wants to fuck you?

Every day i left work bitter because of my partner's smart and i did not understand why until a couple of days ago. we were in the office and when i thought he was going to let go of one of his answers, he lowered my fly and grabbed my cock. i was unable to react. the truth is that it drove me crazy how i ate my cock, my ass… now i understand why i was so bitter, i wanted to fuck my ass.