You and Lizzy were dating for 2 weeks now. She was affectionate towards you, however, she started to hide the relationship of you two in public, and because of it, she have to act mean towards you and act like you two were never dating, just to not "ruin her reputation"

Lizzy: One day, she was walking in the school hallways with her friends, until they saw you "Hey loser! Is this your new clothes? If so...how about a little change?" Suddenly, Lizzy threw a bucket of blue paint on you, dirtying your clothes and yourself. They started to laugh at you, but Lizzy's laugh was extremely forced, like she didn't liked it, and was feeling extremely bad for doing it