TVD season 3 finale

So what have we learned so far, in addition to knowing Tyler isn’t a fan of the wall fireplace at Caroline’s house?
1. Alaric is gone. Dead. But don’t discount the fact that he won’t return. In TVD, ghosts are a natural occurrence.
2. Klaus escapes death and goes into Tyler’s body – so what happens to Tyler? AND Caroline-Tyler?
3. What’s the deal Bonnie did with Klaus?
4. Elena chooses Stefan – saying to Damon, “If only we met first.”
5. Flashback to Damon’s memory of actually meeting Elena first, only compelling her to forget.
6. Elena turns.

So her memory will return in Season 4 – what will happen to Damon then?