If you read Dirty Martini you will have known what an obnoxious person Knox was and I never thought I would see him redeem himself but he does . 
When you meet Knox’s family you understand why he is how he has they are just the worst towards him all because he wants to be himself and not what they want him to be .
After Elton and Knox try one of Skylars concoctions they end up wasted and hooking up , they then decide to have a friends with benefits arrangement or just benefits if it’s up to Knox as he doesn’t do friends . 
Slowly they start to mean more to each other however Knox needs to tell Elton who he was in love with before they hooked up but Knox is scared he will lose Elton when he finds out.
Absolutely loved this book and Knox stole my heart and that scene with him and Elton was perfect , you’ll know the one I mean when you get to it .