I think she’s talking about Ty. She&rsqu…

I think she’s talking about Ty. She’s constantly talking about him, and She loved him a lot, and he broke her heart.

In 4×17?

If you mean she was hurt because she was separated from Tyler because of Klaus, definitely.

For Caroline, Klaus crossed a line when she killed Tyler’s mom, but sending Tyler away from her it’s also another aspect that made her mad with Klaus, absolutely.