Fell out of touch with someone who used to be a very close friend. We used to be in contact most days, then I just stopped messaging and they did not ever message me, fine (long build-up of issues: mainly they were quick to tell me if they thought I wasn't living up to their "friendship demands" but not able to see the problem if they were rude to me, which did happen, pretty frequently). Fwiw when I confronted them about being unkind, their excuse was that everyone did it but they were sorry
and then when I responded that I tried not to treat people like that, they huffily apologised for "not being as perfect as me" 
So. I later decided to see if we could bring about a "thaw" in relations for sake of wider group. It's always good when we're all together, it's only me this person behaves strangely with (we were closer which may explain it).
"Friend" then told me how I had hurt them by "not being there for them enough" (not trye!) and was very me-me-me about it all. They seemed shocked when I said that id been finding their behaviour hard to deal with and says how they hoped we could get back what we had...
Anyway a few weeks later, I haven't contacted them and they haven't contacted me.
This is fine obviously for the reasons I outlined but wtf?! Why launch at someone telling them all their faults then in the same breath announce you hope to still be "best friends", then not instigate a conversation?! I know it takes two but what were they actually hooing for? Me to message admitting all responsibility for being a "shitty friend" and begging forgiveness??
Sorry. This was meant to be a generic rant re similar personalities! But yes, whilst I think they abu, wtf is going on? WHO ARE THESE PEOPLE