I recently converted my friend about Skins, and then I told her how freaky it was that Tony and Maxxie were the first to be friends in the group (remember their parents were friends early, early on as mentioned in season 2 episode 1)?

And then Chris and Michelle became friends later on, as was said in the last episode while Michelle and Jal were in the huge aquarium place thingy.

I know for a fact that Michelle and Jal knew Cassie before she was sent to a mental institution, but that Tony didn't know Cassie until Michelle told him about her for Tony's plan for Sid.

(So how did they become a gang? And in what order did they become friends? We know Tony and maxxie was first, then Chris and Michelle, and then later on...?)

Sorry if this question was asked already. (Was it?)