It's senior prank night and Bonnie is roaming the hallways when Klaus suddenly walks in.Later, He tells Bonnie that she has to 'do as he says', basically telling her that she still belongs to him and not this new guy she is dating.
Klaus&Bonnie are couple but he often goes away to do his "business" So Damon wants to take an opportunity and flirt with Bonnie She says him to leave her alone and when he doesn't do it, she just calls her boyfriend...