When you're in a relationship, you gotta control your anxiety and not try to control your partner out of jealousy. When i was still with my ex, she talked to another guy who was her best friend. I got really anxious and paranoid she was gonna cheat. I never asked her to stop talking to other guys, never had an outburst with her about it, never accused her of anything, never asked for her social media, etc. I only casually asked if she had a crush on another guy and never talked about it again. Guy found out we were together and surprisingly, he seemed hurt lol. He said "i am..." and she said "bitter lol." I realized all the thoughts i had about not being good enough, her liking that guy, cheating, lying, etc. was all in my head. Once you have an outburst or control your partner out of jealousy, you create unhappiness and increase the chances of a break up.