I was squashed in between a cute asian girl, the door and this italian guy, and when the train braked hard the asian girl glomped me. Small vibrations also made me lightly nudge her body. For a long while I was really enjoying the touch of her skin and soft clothes, my boner grew, and I momentarily plunged into fantasies of running my hands all over her hips while burying my nose in the scent of her hair. What really scared me was that I was only millimetres away from actually doing it. For a moment I couldn't tell fantasy from reality and I briefly panicked, thinking I had already touched her and that I was a fucking pervert now.