feeling guilty

hey i know im supposed to be cool with my partner seeing others but tonight was too much. we went out and she was so into this guy at the bar, they started kissing and everything. i mean it was totally consensual but watching her moan his name like that, feeling how wet she got for him...it made me feel sick and hot all at once. my fingers ached to touch myself remembering the way her body responded to someone else. we talked after about how great it felt but i still cant shake this weird mix of arousal and betrayal inside. i keep replaying every second in my head, wondering what im supposed to do with these conflicting feelings