I think neighbors would work, and if they went to the same high school, that would also work. So I assume they met around age 14-15? Does that sound right to you? I'm working on my own CS right now, plan on finishing it before I hit the hay, it'll be basic but hopefully still useful.

I'll snag the one who can lift heavy things, and also the fire one. I'm thinking a Golem and a Growlithe.