Ashton Drake (Aurum Court Dragons #1) by Emilia Hartley

Ashton Drake as a young man needed to have his head beaten. He was such a jerk and just left  his mate who loved him behind. No word, no contact and he wonders why his dragon is insane. He's lucky is this story, and it makes you wonder what is going on with all the other dragons in this clan, or are they all just insane or stupid?