Daddy Frost by Lynn Hagen

After Delta’s mother passes away, she leaves him vulnerable to his uncle’s manipulation. Initially, Leo asks Delta to run small errands for him, and it seems harmless enough. But now he’s in way over his head after his uncle pulls a shady move on him. When Delta meets Kalen and feels an instant connection, he knows he has to walk away or endanger Kalen’s entire family.
Kalen is the father of three grown wolf shifters who have already found their mates, but he has yet to find his own. That is until he meets Delta, the new server at Deep Dish. From a highspeed chase, to newborn pups, to killing an intruder, Kalen has his work cut out for him. Despite the challenges, he is determined to build a life with his mate and is willing to do whatever it takes to get there. Even if he has to eliminate every single one of Delta’s enemies to achieve that goal.