I'm sorry for the long text, just read the description....

I have issues with trusting people.... So I had a bestie who I was friends with for almost 6 long years (who was suicidal for most of middle school, but eventually got better because of me) we have been friends in elementary school. I never had any interest in her because I had no interest in developing relationships, unlike everyone else in my school. But then, about 7th grade, she started to hug me and even held my hand, after I attempted to ask her out because my lousy sister told me she liked me, but I chickened out... And turned out that she liked me back in elementary school... So we stayed friends for years after that and for the rest of middle school, we continued to hold hands and give hugs. But once we almost finished 8th grade, she came out as bisexual, which I had supported her even after my parents had told me that bisexual people are "selfish" (which is a load of shit). So we went on to our freshman year and she had gotten a girlfriend, which caught me off guard because my bestie never told me, and the fact that I had gotten her a Valentines... She took it as a gift instead, not overthinking it. I continued to give her gifts when I got a job. Of course during this time, she made a new friend group in school (We both didn't go to the same school but my bus stopped near her school)... This group is a lgbtq group, full of trans and bisexual kids, me being the ONLY straight kid. They kinda left me out and would often ignore me and pick on me, with my bestie just teasing and one person calling me Toby McGuire as a compliment. One day we were hanging out and someone, I guess, said the f sur. At the time, I didn't even know what that was and I asked questions, which they told me and I accidentally said it aloud. Everyone laughed, but my bestie called me a homophobe... Scolding me for saying it without directing it at anyone. And after a few weeks, she and her girlfriend hit a rough patch, that I supported her during and they broke up. Literally, after 6 days, she got with someone IN THE GROUP! A day after that, they were talking about binding their chests because my bestie became genderfuid, I joked to one of the trans kids who didn't like me, who wanted to be a girl... The group got quiet and my bestie just lost her mind, calling me a transphobe. Then she threatened to leave and apparently the trans kid I joked on had also had enough of her and we both Tod her to just go ahead and leave. A few minutes after, I have had enough mental abuse and just left, unfortunately, my bestie was at the front doors (we hung out in a library and those were the only way out), so I hid in the boys bathroom until she went back inside after crying. I had left and refused to answer her texts because I had enough, because before all of that, it was my birthday and I invited her to hang out with me at a arcade place (A day AFTER my birthday because I had a JROTC parade at night ON MY ACTUAL BIRTHDAY), I even picked her up from her apartment, which was an hour away and dropped her off AND WALKED HER TO HER DOOR! So after I had left the library and ignored her texts, she met up with me, face-to-face and asked me what was wrong and I ignored her.... She very much nows what she did wrong. And after that, we had never talked or even looked at each other since... She was the only girl I had been close to as a friend in real life because most generation Z girls are just awful to talk to. Nowadays, I have this co-worker I like, who's a minor, like me at work. She has been having a rough time at work because a manager doesn't like her because she wears a nose ring, anyways, I've been super nice to her and supportive. Even when my mom said don't talk to her when she got suspended for being late, ONCE. Now she barely talks to me and doesn't even bother to text me. She had fainted at work and I had to know through my co-workers when I got to work.... At this point, I keep asking myself, "Why should I trust anyone? I would give support to the people I know and care for, then they toss me aside when I am no further of use to them."