Klaus & Elena
...Because he needs her for his own protection.
The relationship between Klaus and Elena has mainly been antagonistic.Firstly, he needed her for the sacrifice. During the ritual he drains her of blood.
Klaus starts to notice that something is wrong and that the doppelganger may be alive. After knowing this, he goes after Elena, in her school. It is revealed that in order to make hybrids, the doppelgangers blood is needed. Klaus realized he needs to keep the doppelganger alive and decides to take Elena out of town with him, but he leaves without her. Elena soon saves him from getting staked with the indestructible white oak ash stake Esther created in order to kill the Originals. It is then shown that Klaus would kill Elena by draining her blood to create his hybrid army.
"Ship" names: Klena, Klaulena.
So many differences I can name,
But why can't we drop all that
And make peace.
Seeking the path to bloodshed
What life is there to be found
When death is all around?
We're either souls or primitives
How you love to argue politics
Splinters in eye, and sticks.
In any belief it's not you or me
Why must life be "us and them"?
When we sprout from the same stem.
No greater call
No greater purpose
Love one and all
Did something i shouldn't.
But i felt your heart.
A saddened passion deep inside.
Somewhere, you know...
Somewhere we share a secret.
Reality is here.
But, the stars and the moon, they know.
They wait for us to find our way
Someday we will.