Facebook etiquette?

I have a myspace account- to keep in touch with my soldiers... although I did not do that willingly, I did it.

For school, there is a program facebook page- so I think I got myself a facebook thingy too. I have no idea how to use it or anything, but I have one.

So I get an email today, from someone wanting to be my 'friend' or whatever it is on facebook... the guy that blew me off the night of my high school freshman homecoming dance (literally- the guy was only there for the first 45 minutes, then he disappeared. I found out the next week that he went bowling)

Is there some sort of etiquette on facebook or myspace or whatever? I mean, it's not that I have any hard feelings toward they guy- there were some exigent circumstances that were subsequently illuminated that I understand. However, still- this was merely the first guy i a long - LONG serious of getting stood up, getting blown off, and my personal favorite when a guy showed up for what I thought was a date with me, and brought his girlfriend. I know that he didn't really have any sort of influence on the number of guys that did subsequent dirtbag type things to me, and actually meant them to be dirtbag things in some instances... but still, in my mind he will always be the first. And so you can imagine that he's actually not one of my most favorite people to think about.

It was just weird.

Not to mention that scrolling through his friends- most of them were my so-called friends in high school... whew, what a trip down memory lane! What a weird day...