Borrow My Heart, by Kasie West

Wren likes her rules.  They keep her out of trouble and protect her from trusting others too much.  That's important when because she's still dealing with a mother who abandoned her family when she was ten.  But one day at her BFF's coffee shop, she meets a complete stranger and makes an split second decision that breaks those rules.  

Asher has been chatting online with a girl named Gemma whom he barely knows.  He's supposed to meet her for the first time at the coffee shop, but she's standing him up and everyone knows it, especially his friend Dale who's loudly planning his humiliation.  Wren takes pity on him and impulsively decides to present herself as Gemma.  Her intent is only to play this charade long enough to get Dale off of Asher's back, but she never finds a good time to come clean.  So, she ends up fake dating him, which naturally turns into real dating.  Needless to say, many more rules are broken.

In addition to this rather predictable love story, there's the parallel (but comparatively underdeveloped) story of Wren considering reconciling with her mother.  To me, this seemed like a very different plotline and the two mesh poorly.  It is like reading two separate books, both of which are fine in their own right, but that don't really belong together.  The storytelling moves along briskly enough, there's some lovely comedy with the animals (and with the unloved mutt Bean in particular), and the dynamics between Wren and Asher are fine, but there isn't much substance to this light summer read.