He was so sweet to me before, but he was kinda mean yesterday...why?

Yea obviously when alec saw you talking and laughing with DK he got mad so being a litte 13 yearold retalated by saying mean things to DK. You should tell alec to grow up and no one likes a person that is that jelous. I think DK is only kiding when he teases you so I would not worry about it. He probebly only does it cuz he knows u like him. If it realy bugs u though just ask him to stop more and he will. Hope it works out well.