The Ultimate Sacrifice - Four Packs Trilogy, #2

Grady Summerville is facing a slow and agonizing death, but has come to terms with his disease and doesn't fear dying. However, fate has other ideas, presenting him with a future thanks to Max Steele. Grady owes his very life to Max, and as his health improves, finds himself falling head over heels with his savior. Max Steele has been forced to leave his pack and everyone he knows to move to the West Territory to be a blood donor for Grady.
He knows it's the right thing to do, but it doesn't mean he has to like it. As tensions escalate between the two packs, Max finds his loyalty tested and is torn between following his alpha, or following his heart. If Max doesn't make the sacrifice then it will be Grady making the ultimate sacrifice and paying with his life.