1. Because they have an "understanding".

2. She saw something in him than no one else had - his humanity.

3. They look hot together

4. They have intense chemistry.

5. They have fun together.

6. They make Stelena's sex scene look overrated with their eye sex

7. They have been compared to Jack and Rose from Titanic when Elena walks down the stairs to meet Damon at the dance.

8. It was Damon that saw her first as a crow ;)

9. Because when Damon falls in love he falls hard.

10. You can't deny their sexual chemistry.

11. Because at first it was an obsession as she looked like Katherine, but then...