Wrapped in a Bow by Lynn Hagen

All David wants is to escape his family, but he’s stuck with no way out. With the holidays quickly approaching, David is desperate for a night of partying his heart out. What he found was Mordechai—a panther shifter who is determined to save David from his own miserable life.
Between David’s drunken uncle, his angst-ridden brother, and his flip-floppy aunt, Mordechai has his work cut out for him. Mordechai sees how happy his youngest brother is and wants that same connection Malachi shares with his mates. What he got instead were a load of problems. Not only is David’s home life a dysfunctional mess, but Mordechai’s isn’t any better.

When Mordechai notices he’s being followed, it’s up to him to keep his mate safe, though he doesn’t have a clue why someone is after him until he’s attacked and the truth about his family finally comes to light—a truth he refuses to believe.