Wren and Oak by Sam Burns

Rowan Harbor has been peaceful for a now unprecedented two months, but everyone knows it’s the calm before the storm. The Summer king is coming for the thorn—a weapon destined to bring his end—and Fletcher has never felt so helpless.
When the disturbing dreams start and his mentor, Oak, is hesitant to discuss them, Fletcher doesn’t know where to turn. He and his boyfriend Conner are in the process of moving in together, and he doesn’t want to add anything else to Conner’s list of concerns.
With a vengeful fae waiting for his chance to raze Rowan Harbor to the ground, Fletcher has to find a way to protect everything he loves and survive the coming storm.