Entranced (The Kavanaghs Book 2) by Tracie Delaney

Ryker is spiraling into a blinding fury after a confrontation with Athena leaves him facing his own hypocrisy. Despite his best efforts to ignore, push away, or forget her, every attempt to move on has been an epic failure. Torn between his rigid self-control and an all-consuming jealousy, Ryker realizes he is in serious trouble. He can't have Athena, but the thought of anyone else having her is enough to drive him to the edge.