I went to the pub with two friends from a college course. We are a tight-knit group as there are only 15 of us, all taking the same classes.
When I turned up, I bought a round for the friends (M and F) and F's friends who were also there. I thought we were all getting along fine. F kept drunkenly saying "me and M are staying at mine", as if to clarify that I wasn't invited. This was fine. I said I was getting the train anyway.
Last orders bell rang, I went to the loo. When I came back, the pub was empty. I was only gone a few seconds. I looked out the door and (it's a long, straight road) they'd vanished into thin air.
By some unfortunate quirk, I had missed the last train and my phone battery was about to die. I had been relying on borrowing one of their phones to ring a cab back to my home town, which is 11 miles away. But they'd gone.
I sent a message to M saying "phone about to die - did you leave? I wanted to borrow a phone quickly, I'm at xxxx". He replied "yeah soz".
Unfortunately, my phone battery didn't last long enough to get to the station and I ended up lost. A strange man tried to pick me up and started following me, begging me to stay at his flat. I finally saw a cab, hailed it and jumped in, shutting the door so the man couldn't get to me. I didn't have much change on me and tried to get to my friend's address. They didn't answer the door and I couldn't call them.
Eventually I ended up trying to walk home, about 10 miles. En route I tried the emergency button at a train station (was told he couldn't help me), to get the attention of security guards in a university building, and to ask a man in a shop to ring a cab for me. Nobody wanted to help. It was pissing it down with rain, and finally I was helped by a security guard at a large venue that I got to. He helped me call a cab and I got home.
So my AIBU is really, should they have told me they were leaving? I know grown adults are ultimately responsible for themselves. I just don't think I'd leave a lone person, who I know doesn't live locally, to fend for themselves. I also felt that their disappearing act was in some way indicative that they don't like me :(