This was a while ago but I will still omit details for anonymity.

From the title many of you would immediately answer yes, but now for the context.  

I was with an on and off relationship with this person for about 2 years, I had previous relationships, never had trust issues with any of them.  The girl in question had even told me on several occasions that I was the most trusting boyfriend she had ever had and that it was one of her favorite things about me.  After about one month of dating she broke up with me and told me she wasnt ready for a relationship, about a few days later she was dating a man who she had told me was just a friend while we were dating, I had convinced myself with her help (reasons why she broke up with me) that I just wasn't being a good enough boyfriend.  I went back to dating other people but remaining single.  A few months later they had broken up and she came back to me telling me he was so awful etc and we gave it another shot.  As you would imagine my friends and family were now very skeptical of her, I had to defend her to them saying how I wasn't very good to her etc.  Anywho we end up dating for another 8 months and I suddenly was dumped again for weak reasons that seemed made up since she hadn't mentioned them before (turns out he had "leverage" over her), well what do you know another guy that was just a friend while we were dating is her new boyfriend a week later, I was able to win her back a week later (I feel pathetic writing this out I know).  My friends and family of course saw her for who she was and hated her but yet again naive gaslighted me had to defend her.  The relationship survived until we lived together for a period of time when I slowly realized how I had been played, idk it was some kind of slow forming epiphany.  I even had a doctor appointment for experiencing weird health symptoms which the doctor suggested was a physical manifestation of psychological stress.  I denied this but in retrospect he was a genius since the symptoms disappeared after I dumped her a few months later.  In my heart I still loved her but my brain had had enough clearly, I was literally destroying myself inside.  A week after dumping her I was on my laptop and noticed her chrome account was still logged into the browser, the entire past 2 years I had spent wondering whether my trust issues were just paranoia and if I was just another one of those crazy boyfriends but I could have the answers at my fingertips, I honestly couldn't resist.  I know what you're thinking (the truth will only be more pain, dont do it) to which I would disagree with you because in retrospect I could know that it wasn't my fault, the truth set me free.  I logged in and found proof of her cheating, not just on me, on her previous bf too, and that she was lying to the guy she was currently seeing about the fact she was also still sleeping with the guy she cheated on me with.  The guy she cheated on me with told her about how he wished I knew about what they did together.  Waves of rage overcame me, but the illusion had been shattered, I knew now what happened, that I wasn't crazy, and that the people in front of me were just truly despicable people, this was a guy that I shook hands with, that I let hang out with my gf because I was trusting.  I screencapped everything, I wasn't going to let this happen to another dude.  I sent the logs to the new guy she was seeing, explained who I was, and that was that, I wasn't interested in being with her again, maybe I wanted vengeance partially, but most of all if I could've had someone send me that and avoid the past 2 years of my life I would've given anything to have that.  In the end I got a title XI complaint from the university and was scared shitless but I would still do it all over again, there was no contact following the sent pictures and a thank you from the guy.  No one knows about it except the parties involved, sometimes I worry about what my friends and family would think so I guess I just want reddits opinion given the context AITA?