Mismatch, Lovematch by Megan Derr

Match is a hedge witch, part of a group of Guards that protect their town and the surrounding area from supernatural danger. He is not fierce and glamorous like his teammates, the paladins who do most of the fighting, a werewolf who does most of their hunting and tracking, or their sleek, crafty hacker who fights from a modern angle.
No, his life is plants, herbs, and potions—and being hopelessly in love with Ronan, the dark paladin of their group, who comes from one of the oldest families in the supernatural community. Far from a poor hedge witch living on the wrong side of town, even if they have been teammates and friends for years.

Then, in the aftermath of a fight with a bog witch, Ronan agrees to a date and it seems like for once, everything is going Match’s way…