I want revenge

Okay I am so fed up with so much shit and mistakes my boyfriend is making recently, like accidentally making me jealous, hiding things from me. Im scared of being over dramatic but I'm secretly crying at night because I'm so upset, but I can't tell him that because I don't want to be attention seeking. I'm just so angry and I need to release it somehow or I will go insane. Is there any safe way to get revenge so I can make him understand how shitty he's making me feel or communicate how awful I feel without being over dramatic??