There is this one real fast guy I share a big part of my route with, but I only see him every now and again. I usually keep a chill pace on my commute, 17-18, while he seems to ride at 100%. When he passes me I try to pick up my pace and ride with him until we split off.
Just a couple days ago I had to stop at the art store on my route and there he was! He gives me a high five as if he has known me for a long time, then takes off. I talked with some of the employees and they tell me he works at the store, his name, and how far his commute is. I feel like I made a new friend, but I have to actually have a conversation with him next time.