Vengeance From The Dark by Jessamyn Kingley

A thousand years. That’s how long Chieftain Lorcan of the Acwellan has waited to have his vengeance. At last his mate has distanced himself from the sanctity of the magic stealing stones the Cwylld elves are notorious for and finally Lorcan can end his miserable life. It is no more than he deserves after abandoning Lorcan and igniting a war between their people which has left the demonic elven of the Acwellan tribe decimated. Surprised to find the man he once loved blinded and living in a sanctuary, Lorcan is undeterred. He has a score to settle and will allow nothing to get in his way. Not even his own heart.