Not on a plane, but in a train

Last night I dreampt I was traveling with an exboyfriend through the desert on a train. Our window view was sand for days and days but there were so many stops along the journey. At each station we saw someone we knew from the past when we were a couple but as the stops started getting more frequent we each started seeing people we met after we broke up. At the last stop, I noticed a band on his left ring finger. I asked him who that was from and he explained that it was from his current girlfriend...who had just got up to use the bathroom. I woke up immediately.