I think if a friendship becomes awkward after some years, friends should pick up where they left off. We should not try to pretend that nothing has changed in those years that we didn't keep in contact and move on from there. It doesn't work. It just makes everything even more awkward and confusing. We should talk about what happened and reconcile it and resolve it, and then we can move on. But sometimes it's too awkward to even do that. It's even worse when two parties don't recognize that. Sigh. It's strange.