Torn

This isn't right. Yes, she's my half-sister, Yes, I've only just found out she exists, but I want her.
I want her in a way no brother should ever want their sister, but the chemistry is unmistakable, and I know she wants me too. 
No, I have to leave while Abby get's acquainted with the rest of the family or I'll give in to my sick urges, I know I will - Chad.