I had a strange encounter with someone I thought I sort of knew.
A few years ago I was at a bar watching sports. I saw a guy that I had talked to a week or two prior about the Royals and we started chatting again. Or at least I thought so....after we chatted for quite awhile, I realized this wasn't the guy I thought it was. I said something along the lines of "we chatted up here a couple weeks ago, right?" He says it wasn't him, but we had a fair amount in common and continued chatting.
A bit later, my girlfriend showed up. She walks up and says "hi, Ryan!"...to the guy I'm talking to. She says to me, "you know Ryan?" I'm thinking WTF is going on here. I said I thought I knew him, but turned out to be a case of mistaken identity. Then Ryan says, "how have you been, {gf's name}? I haven't seen you in awhile." They went to high school together. We lived 1,100 miles from where she went to high school.
So in the end, I thought I knew the guy but didn't, and we lived three blocks from him. My girlfriend knew he lived in the metro, but didn't know where.
Present day, we still hang out regularly.