Caprice lives next door. She is Karla‘s younger sister.
You and Caprice were virtually inseparable growing up. The two of you dated in high school. Forced to focus on your studies, you neglected your relationship with Caprice. Rather than talk to you, she decided to show you what you were missing. She made out with a random dude in the school corridor in an attempt to make you jealous.
After her plan backfired she said it was just a dare and nothing more. The two of you have hardly spoken since.
Pursuing Caprice comes with a risk. If you neglect her, or she sees you flirting with other girls, she may try and make you jealous again.