Purple Haze by Kelly Jensen

Six months have passed since Dillon and Lang crashed into each other on a crowded street in New York City, changing the course of their lives. Now they’re living together as a couple, happy, in love, but not quite ready to say the words out loud.

Dillon is about to embark on a new adventure—opening a private art school housed in the brownstone left to him by his father. Lang… Lang is becoming ever more aware of the futility of his mission: being caretaker to his clan’s future when his clan might not survive the war with an opposing faction.

When a flashbulb outside a nightclub on New Year’s Eve temporarily blinds Dillon, the course of their lives is set to change again. Dillon’s perception of how the world works is going to be forever altered, and Lang will have to decide between his mission and the man who has come to mean more to him than he ever thought possible.

It will be up to both of them to chart a new direction, one that holds the balance between being human and alien. A course that might require sacrifices neither of them is willing to make.