“There’s only one so it’s not like I’m going to get it anyway.”
You know, this one sentence betrays every ounce of insecurity Caroline Forbes has. And the fact that Klaus constantly asks her whether or not she wants the cure - at the back of her mind - makes her feel wanted, like somebody actually thinks about her at least once a day. Even Elena and Stefan, they called her only because they needed help. They didn’t ask her if she wanted to come along, whether she wanted the cure - they only wanted her help. Tyler or Matt could help them out - why Caroline?
This is why I ship Klaroline. Because it brings out the insecurities in both those characters, and the other indirectly or directly helps them.