Supergirl- Love Choice

Kara Danvers (AKA Supergirl) has four friends, James Olson ,the CEO of Catco and National City's Gaurdian, Winn Schott Jr, Kara's best friend and new DEO agent, Mon-el, an alien from Daxam who crash landed on earth, and Barry Allen, a superhero from another Earth. All of these men have feelings for Kara, but Kara doesn't know who she likes other than the fact that she has turned down pretty much half of them.

To understand this book you must have watched season one of Supergirl, and all season two episodes leading up to Medusa, also the four night arrow crossover.