Here is the cliffnotes version of the story in chronological order of events:
-I had never dated before.
-I met a girl at my new work. She tried to flirt with me for several months, but I feigned disinterest because I was intimidated by her and judged her as being out of my league.
-I developed a major crush on her, but continued ignoring her advances, which escalated over time.
-After four months of her flirting and me ignoring her, she came on to me hard one night outside of work.
-We dated casually for five weeks, but never had sex because I was timid, weak, and negative. There was an offer of sex on the table, but I failed to capitalize on it.
-After five weeks, she shut me down almost overnight and friendzoned me.
-I did the beta orbiter thing for the next three weeks.
-She announced in front of me that she was fucking someone else.
-I was emotionally devastated.
-I excused myself from the situation, quit my job, and went no contact...
-..until we talked again a few weeks later, and I made a fool of myself by lashing out at her, and she told me off.
I got a new job, but it's three times as far away and the commute is ruining my life. I can get re-hired at my old workplace in another 3.5 months. I have few other options because I can only do this one kind of work. But I don't know how I'm going to deal with her presence there. If I were to show up there today, it would be horribly painful and distracting, and I doubt she wants me there. She knows I liked her, she knows what she did, and she knows how I feel about it.
I still have all her dirty texts from when she was chasing me, and not that I want to, but I'm sure she's clearly aware that I could use these against her if necessary.