Max and Ruby have fallen hard for each other after a bitter grad school rivalry turned first into lust, and then into love. When the school year comes to an end, they’re faced with a new challenge: a summer apart. They make plans to visit each other, but when Max comes to Chicago to meet Ruby’s family, she brings with her a secret in a small package – an engagement ring that she hopes will prove her devotion. There’s only one problem… Max has never been good at first impressions, and she fits into Ruby’s family like a square peg in a round hole. Everything she says is wrong, Ruby’s perfect ex-girlfriend keeps coming around, and the city is exhausting. It even seems like Ruby is beginning to question whether she has what it takes to navigate life with a partner on the autism spectrum. Is love enough to get them through the summer? The Rules of Engagement is Book 2 in the Rulebook series. It's recommended to read these in order.