Yeah I was never sure what they were trying to do with Bonnie/Enzo, it seemed like a possibility for about two episodes after it was first introduced and Bonnie was suddenly attracted to Enzo in the present, then they went right back to keeping the emotional focus centred on Bamon. I suspect that they ended up regretting teasing Bonnie/Enzo after the initial testing of chemistry, but of course the time-jump means that they're now stuck with it as canon and need to figure it out.

Ditto Caroline and Alaric. I don't really know where they can go from here with that pairing, I would be surprised if it is going to be painted as true love, but it's going to be difficult to explain a break-up after they've supposedly been together for years happily raising a family