A fun easy read that was entertaining but I had 2 issues with it. The major one: SN being who it was was SUPER predictable. Like, that worked out a little too perfectly. Maybe that's the nature of Y fiction, to wrap things up all nicely, but I would've enjoyed the realistic aspect of SN being a rando who was less perfect than (spoiler) Ethan and made Jessie see someone for who they are on the inside and not fall for their swoon-worthy serial-killer eyes. That's just me.
And second: When she's texting her dad, he matches her (and SN's) tone by USING CAPS FOR EMPHASIS. I can understand doing that with your friends because you're similar and you rub off on each other, but my dad does not know how to text like a teenager. He texts like a dad, which means he usually calls. When Jessie's dad started using the same tone as she and her high school friends, it condensed the voice of the narrative. Like The Waste Land uses many voices in one story, this one had moments where it felt like the undeniably same voice throughout.
Apart from those nitpicky details, it was a generally fun, feel-good read. I might've enjoyed it more if I were still a teenager, so I'm tempted to give the author's non-YA works a try next.