Ally Hastings is my obsession, the one girl I never should have fallen in love with.She ran away from me for a year, filled with shame, insisting our feelings for each other are wrong and we can't give into temptation. No more sneaking around. No more stolen kisses.Now Ally is back in town, ignoring our past, trying to date other guys and move on from me. I thought I could hate her for the way she ripped my heart out but I'm more obsessed with her than ever. I don't care how wrong we are for each other, Ally Hastings is mine, I'll make her see it, and I won't let anyone take her from me.My Favorite Sin is a "his dad married her mom" new adult romance. It is book 2 in the Playing Favorites series and can be read as a standalone novel. For a more immersive experience it is recommended to first read the novella My Favorite Girl.