The many disguises of a human being in Misunderstood guy

I am sort of confused and most days have a lot of issues trusting of most people, so many times I thought a person was a true friend I ended up finding out in the end that they were probably one of my worst enemies, someone of disguise, someone of lies. I recently had a friend whom decided it was best to part ways without saying anything to me, I feel I was a good friend to them I feel like I supported them and I feel as if I at least try to not be to much of a negative of a person even though I tend to express my feelings very openly. Well not too much longer after that I had a friend of theirs randomly message me, this person was their boyfriend whom I hadn’t spoken to in about 7 years, he speaks friendly he acts as if he cares but again he quickly said things that made me feel uncomfortable, things in which I feel he should know that he should avoid talking about. I am now trying to figure out whether I can trust him or if he’s just another one of those disguised people, I do want good male friend whom can relate better to me then a female friend could necessarily in some aspects but I question whether I can actually trust this man, I’ve been let down by him his mom and his girlfriend whom I mentioned above was actually the friend who decided to part ways with me recently whom was actually my girlfriend 7 years ago. Kind of a shocker huh I only wrote that part because I couldn’t decide above if I wanted to give people I don’t know on this website that much information but I guess by the time I got down to the bottom I was like okay well no one really knows me here so I might as well speak freely. I’m not sure how much more detail I want to give out since giving more detail would really make it a lot easier for someone who may know me reading this the ability to completely identify that it’s me. I guess I will make that a separate post. Thank you for anyone reading this I appreciate it.