I love discovering mutual connections on Facebook. One of my college roommates married the cousin of a friend I met many years later, which I discovered when I commented on a post by one of them, and the other said, "Hey, how do you know...?" It's already delightful knowing them, but it creates a fun friendship triangle, somehow making our connection feel deeper. Someone in my neighborhood asked about a singing instructor, and since my girls are musical I looked up one of the people mentioned over and over in case we decide someday that voice lessons would be a good idea. She was friends with so many people in different circles of mine that I wanted to send her a message and say, hey, we're not currently friends, but apparently we should be because we like a LOT of the same people. Turns out she'd grown up in my current neighborhood and helped with a play one of my daughters was in (while I was helping with a different play). I briefly met her, but not enough to ...