Story time. Long time ago when I was young, naive and even more stupid than I am now, I have, by chance, found out how much my younger co-worker, who just join

Story time. Long time ago when I was young, naive and even more stupid than I am now, I have, by chance, found out how much my younger co-worker, who just joined our team, earned. By chance I mean, it came up in the form life insurance he took, which, at our place, was a standard double salary. My co-worker had less experience, less credentials; he was doing less than I was doing, because he just joined us. I was incensed and I did everything wrong including sending email to my boss asking effectively 'the fuck'. My boss, not being an idiot, started documenting the interaction with first question being:'How did you get this information and did you happen to access something you are not supposed to?' As you can imagine, it kinda spiraled downwards from there, which included me having a longer conversation with boss's boss. Eventually, I quit, but if I were to do it again. I would urge everyone to take a deep breath, get an offer and then talk to the bosses to throw the 'more money for co-worker' as a cherry on top. Anything else is counterproductive.