His Rejected Alpha Mate by Jax Stuart

Finally reunited with his son in his new pack, and free of his former mate, Jasper discovers his fated mate in the heart of the Sweetwater pack. Dakota is an unwelcome complication in an overloaded life.
Dakota wasn’t looking for a fated mate. The loss of his love, Cooper, still lingered in his heart. The strange attraction he felt towards his best friend’s papa made sense when he met the man. His true fated mate. Rejected instantly, Dakota brushes aside his hurt to make his case but Jasper stubbornly insists they can’t be together, denying Dakota of the family he’d started to dream of having.
An unexpected pregnancy brings the pair together. Jasper has to learn to trust not only his life, but the life of his kids, to his new mate when an outside threat comes for the Sweetwater pack.
Proving his worth to his mate, and to himself, has never never been so vital to Dakota, especially with his children, and grandchildren’s lives on the line.