Am I the Asshole for going thru his phone and warning girls about his behaviors?

so this is a loooooong story so sit tight, it won't make sense unless I tell the whole story..

We (f22 and m22) met about twoish years ago on a sketchy ass dating website (not gonna say which one bc the app needs to die lol) and we talk for a little bit before meeting up in person. I am not gonna lie, I like my men nerdy and meek and that was exactly what he gave off. The first meet was nothing special; we were in his car and drove an hour away to a vape shop I knew. We fooled around and tbh he was fun to spend time with (because I was blowing off steam when we would bump uglies) but I did not have any feelings for him and I thought that we would eventually stop talking after a while... this is where my first red flag should have been.

When he calls, he calls to ramble for hours about himself and his struggles using the person on the other line as adlibs for his thoughts. So I stopped picking up... for weeks at a time for him to keep calling saying he missed me and wanted to see me more. I should have listened to the feeling in my gut; because this was the making of a victimizing narcissist about to drive me the fuck crazy. I moved out of the city I was living in for work and told him I lived wayyy too far (1hr 45mins). To give this Flushed Away-Core ass bum his credit, he drove to see me when I was too far to even walk to a store. He would take me away in his red sportscar and we would do drugs together (that I paid for, chile.. the shrooms at least) and in my darkest burnout and depression due to my living and work situation, I felt like i was finally enjoying someone's company who proved to go the extra mile for me (that eldest daughter trauma goes insane tbh). Months of this go by and he asks me to be his gf one day.. and tbh I was taken aback (not in a good way).

We had never been on a proper date at this time and he was never giving "boyfriend" energy. We would fuck, trip, and lay around in his room and that's OKAY IF YOU ARE NOT MY SUITOR... but ya girl forgot she had standards because of depression :p and gave him the benefit of the doubt and said "give me time to think about it.. because this seems sudden as fuck." And for two-three weeks I sat on it, like a fucking lump in my throat and my Libra ass was fighting being "indecisive" bc on one hand, he was really sweet (ig..) but was it really worth my time on a fling even MY ASS NEVERRRRR TOOK SERIOUSLY??? (meet my intuition, she was majorly overlooked in this decision) No. It indeed was not worth that shit.. not worth a DAMN.

But as that span of time wrapped up, he picks me from the place I was living at up and says, "I have a gift for you." This is a man that made me pay for my own food at this time so a gift kinda shocked me. The gift ended up being a record player to replace the one that was stolen years prior. Yes, I bawled. Yes, I became his gf.. just to find out him and the record player were trash.

FAST FORWARD: Due to some unfortunate circumstances, I lost my job and housing in one fell swoop and I was facing homelessness with all my clothes still in the now former place of residence and I was now living with him (UNWILLINGLY). I was fully financially dependent on this loser, and even though he made money during that time he was VERY financially irresponsible. He has always has a green thumb and I thought it was cute (maybe i romanticized too close to the sun on this one folks), then he spent an accumulative $3k on exotic plants in less than a year that he swore would make him money back.... 40% of them died.

This was not helping my depression and anxiety by any stretch of the means. I would sleep all day slowly rotting emotionally and my gentle admonitions for readjustments became full-blown outbursts about him spending $100-$250 a plant. He would go to his friends to vent (which I promote if anything if you are honest) and lie to them that I was a lazy bum who wasn't helping him. I felt there was a rift because everyone (even though we barely talked) started icing me out. So I reached out to his best friend to see if there was anything I was doing wrong and got NO. RESPONSE. Frankly idk what was said in those rooms where I wasnt there, but even one of the girls I found out about would say "He said you were crazy, but I knew better."

On the night of Christmas Eve, he would bring said girl while I was at my mother's house to get money for basic toiletries (that he rarely ever bought me) and when I came to open the door cramping and all, he told me to leave. (he was trying to have sex with her when I came in) At this point, I tell him I'm over his antics and I'm making a scene. Rightfully so, because he schmoozed her up with a preroll I left at the house bought with my cash. It was the disrespect that hurt if anything, because even in my depression I was doing anything my power to make sure he didn't have to struggle (at this time I found a shit-paying hybrid job and was helping with bills, so I was HURT.)

We argued and he tried to kick me out of the apartment with no clothes on and as I went to the closet to grab pants I slipped and fell back with him on top of me. Within moments, he harmed me in a way that shook me to my core. Not even a week later, he loses his good paying job. And it was all on me, and I spent in total 5k on our collective living expenses so we wouldn't be homeless.

TO FIND OUT RECENTLY HE HAS BEEN MESSAGING GIRLS BEHIND MY BACK THIS WHOLE TIME. So when his phone is unlocked I tell his prospects that he is not a good person for women and the things he has done to me. This surprisingly isn't the whole story... but am I the asshole for wanting girls to not fall in the same trap I did? I am leaving and this is part of my exit plan so yeh:3