Trigger Warning: Mention of self harm, suicidal thoughts, and rape A little over a week ago, I found out that the person at the source of my trauma, my ex-boyfriend, now lives in my apartment building. I’d imagined countless ways we might come face to face, but this was a nightmare I never even considered. Here’s what post-traumatic stress disorder (PTSD) is like for me. What does my PTSD look like? It looks like me, smiling at people as I walk down the hall. Meanwhile, panic has me by the throat every time I walk into an area where I might run into him. It’s me answering the phone at…