Cheaters are Narcissists who can instantly excuse their behavior & blame the partner; narcissists either feel entitled, left-out, unwanted, insulted, vindictive, adventurous, excited, or important: or they think a partners too-stupid, out-of-the-loop, easy-to-gaslight, gullible, or too-trusting to think they cheat.
A lot of people who cheat don’t want their partner sleeping with anyone else I don’t cheat in relationships but personally that’s why I wouldn’t have an open relationship hahaha I’m too possessive