Is something wrong with me?

Hi, I'm Kay(f17) and I have no friends (other than my boyfriend). A year and a half ago I lost my first friend made in high school after moving across the country. We can call them S/P. S was a great friend and someone who I wanted to spend a lot of time with, they were nice and open to almost anything. About a year into our friendship they started socially transitioning (ftm) and going by the name P, after the beginning of there transition they became very aggressive and blaming straight up SA and emotional abuse and many other things on their autism and gender disphoria. I am not trying to say these personality changes were because of the transition or autism but there was a correlation. After I confronted them on how I was feeling about the way they were treating me and touching me inappropriatly they said I "never had an issue with it before" and blamed all of my discomfort on me. After I blocked them out I had a few months long breakdown from losing a good friend and the threats they sent me. I was shunned by many students at school.

I have had many friends do this where they go from being the sweetest person ever then turning around and treating me like ***. I'm a nice person and try to treat everyone how they want to be treated but when I have an issue (physical or mental) I'm the bad guy and I was the one who "changed". I feel like this has happened since I was little and I don't know why.

I currently have no friends besides my boyfriend because I am antisocial and feel almost traumatized from the repeated abuse Ihave gone through being treated poorly by people I thought I could trust.

Can someone give me advice or tell me what they think, because I need help.