I'm sorry this happened to you. Hope you don't mind that I use this thread to share a similar story.

I was on the Scarborough RT at a somewhat late time when a guy sat beside me, there were only about 2-4 other people on the subway car, no one else sitting in that row. I was pretty high and sleepy at the time, only in my first year uni. I had my eyes closed and the guy was bringing himself closer and closer to me, as if he was squeezing me onto the glass divider, then touching and squeezing my thigh. My dumb ass took a while to realize what was happening so he was sitting there for a bit doing this to me. Not really knowing what was going on, I just stood up at the door to get away from feeling violated, where he ran away at the stop we both got off of (a busier area). This ended with me getting home and crying to my boyfriend about what just happened. :( From then on I've been more alert and have been more confrontive/purposefully distancing myself to those who act creepy on me in public transit. There is definitely something suspicious when someone sits beside you while there's a bunch of empty seats available.