Theo and Stella will never work out as more than just friends. Then why can't they stop fighting and making out—up!—making up.

Stella James is back in town after ditching her friends for her (now) ex, whose career took her to London, and she's bound to make a big entrance at her best friend's wedding. What Stella fears more than an awkward reunion, though? Theo and their messy more than friendship but never quite love.

Theo Kingsley is an activist and a human rights lawyer in the making, oh, and she thinks monogamy is so last century. Stella couldn't be any less socially conscious if she tried, unlike the women Theo dates. It's not as if Stella really believes forever exists, but she'll never understand how Theo can seem so into her and be dating other people at the same time.

When things between them quickly get complicated again, their push and pull threatens to ruin the friendship in all the worst ways and break their whole friend group apart.