Green dot : a novel / Madeleine Gray.

Enhanced descriptions from Syndetics:

" Madeleine Gray takes a scalpel to millennial malaise, office romance, and infidelity, and the result is a brainy, gutsy, nervy--and hilarious--wonder of a novel."
--Meg Howrey, author of They're Going to Love You

An irresistible and messy love story about the terrible allure of wanting something that promises nothing

At twenty-four, Hera is a clump of unmet potential. To her, the future is nothing but an exhausting thought exercise, one depressing hypothetical after another. She's sharp in more ways than one, adrift in her own smug malaise, until her new job moderating the comments section of an online news outlet--a role even more mind-numbing than it sounds--introduces her to Arthur, a middle-aged journalist. Though she's preferred women to men for years now, she soon finds herself falling into an all-consuming affair with him. She is coming apart with want and loving every second of it! Well, except for the tiny hiccup that Arthur has a wife--and that she has no idea Hera exists.

With its daringly specific and intimate voice, Green Dot is a darkly hilarious and deeply felt examination of the joys and indignities of coming into adulthood against the pitfalls of the twenty-first century and the winding, tortuous, and often very funny journey we take in deciding who we are and who we want to be.