Damon- he realises he likes you
Damon knew you were the one as soon as he met you at the ball. He swore he was in love with Katherine and Elena but he had never felt anything like this.Stefan: when you and Stefan first met he noticed how happy and upbeat you seemed and instantly took a liking to you as a friend. It wasn't until a year or so later when he had his humanity off, Elena couldn't help him but you did from then on he knew he loved you.
Klaus- When Klaus found you, you seemed so small and innocent all he wanted to do was protect you, to love you but soon you showed how strong and sarcastic you are which made klaus love you even more. You were his mate
Matt- After you two first met you started to hang around together more, the night at the Mystic Grill when Jonas came in for Elena. Matt tried to find you and get you out, he was trying to find you when he found Caroline on the floor holding her head with Jonas over her.Being Matt he tried to save her instead he was stabbed in the neck, he thought he was dying that was when he realised he loved you as all he could think about was you and him
Jeremy- As you were friends with Elena, Caroline and Bonnie you were at Elena's house a lot, Jeremy liked you since he first saw you but so far everyone of his girlfriends had died so he did not want to admit it to himself. But he finally admitted it after Klaus took you to get Jeremy to draw the hunters tattoo