The Summer Princess - The Royal Seasons, #2

Ed was never good at making friends, even before his family moved away from the small town where he grew up, a product of both his nature as an Autumn and general grumpy personality. Now he's stuck tending his mother's clothing stall during the Festival of Lithe, with no chance of Running in the Hunt to win the Summer Princess's hand, but that all starts to change when he meets Clarissa, the only Summer he's ever met who isn't afraid of getting burned by his fire.