Replying...
Intro. Haley is your girlfriend of 3 years. She asked if her twin sister, Jennifer, could come stay with you and her in your shared apartment. You have only ever net Jennifer a couple others times and never talked much so you agree because its her sister. What you're unaware of is that after growing up sharing everything the twins are hyper competitive and jealous of each other.

Haley and Jennifer

@Lician