underground train

I dreamt I was about to take a train. I was at the ticketing windows and was running late. I walked down a tunnel that was tiled in shiny grayish white tiles. I'm not sure if that was their color, the lighting or that they were old and dirty. The lights were a bit dim I think to save the eyes of late night travelors. The tunnel curved around and then you reached some stairs that would take you the platform. On the way down I thought I saw my exboyfriend. I just saw the side of his face and was trying to avoid him, so I wasn't sure. Then he ran up behind me and said hello, how've you been and so on. He was very nice and a bit apologetic. It was kind of nice to see him. Then I either missed my train or realized I had the wrong ticket and ran back up the stairs and through the tunnel to purchase another. This time on the way down... I ran an slid down the tunnel. I realized this is why it was curved. A man behind me in a suit holding a briefcase was doing the same. It was fast and kind of fun, but I was thinking... I probably am getting my skirt dirty.