This is the second book in a series, but can be enjoyed on it's own. 
 4.5 Stars for this contemporary YA romance. 
 High school senior Libby Garrett is a big girl. She has some hormonal issues that keep her from losing weight, though she's on a strict diet and exercises regularly. She's a math whiz, and part of the Science Squad at her high school in Utah, but she's gotten involved with a college boy who does her wrong. Owen, may be "all that" on the basketball court, but he's been hooking up with Libby on the super down-low for a year now. He's never met her parents, never gone out on a date with her, and won't even accept her social media friendships. He even arranges hotel stays for their trysts to keep Libby out of his dorm room. 
 In the past year, Libby has changed her wardrobe--eschewing her witty cat t-shirts and jeans for (unflattering) lycra and mini-skirts. She's flaked on all her friends, multiple times, and hurt their feelings. Because, when Owen calls, Libby answers. 
 Her besties, Avery and the rest of the Science Squad stage an Owen intervention, mediated by Adam--Avery's tattooed skater manager at the coffee shop. Adam's had a hard life and he knows all about addiction, thanks to his mother's alcoholism. He is the legal guardian for his younger sister, and sacrificed his high school diploma in order to work enough to support them both. He's always had a crush on Libby, but he's disappointed to see how her personality has changed since Owen arrived. 
 Libby wants nothing to do with the intervention, or Adam, but a week after some hard truths, she decides to try. Adam and Avery continue to tell her that she's worth more than Owen's leftovers, but it's hard quitting him cold turkey. Libby's never had a boyfriend, and doesn't fell worthy of love due to her weight problem. Still, she wants her friendships back, and healthy, and she's tired of being a booty call. Adam agrees to be her "sponsor" and their close proximity brings Libby to a place she never anticipated. 
 This is a refreshing YA romance. Adam's such a decent guy, and Libby begins to see herself as more than a "fat" girl. Her self-image has been low for a long, long time, and it's hard for her to accept compliments, especially from Adam. Adam tries to guard his heart, but he's a goner for Libby. That said, he's not trying to make moves on her. He's hoping that she'll find the strength to love herself, and then (hopefully!!) him. 
 Expect the usual slow bond and misfire scenario. Owen's not eager to give up his feisty kitten, and he regularly tests Libby's resolve. I totally enjoyed the slow burn between Libby and Adam, and I felt that Libby learned a lot about herself, and friendship, in this story. Some grand gestures and humorous situations kept the pace rolling along. There's only kissing on the page, though we know Libby is a sexually active teen. There's a real HEA here, for both Libby and Adam, who are great characters to tag along with. It's a dual POV story so we get to peek inside both Libby and Adam's brains. A real treat!