Isaac had just fled from the pack of Alphas, but he didn't come out in one piece and was pretty badly injured. He had no choice but to come to you, which he does when he needs to feel safe. He needed relief, he wanted to be comforted which was the kind of healing only you could provide him.

He was shirtless and you were patching him up, applying some healing cream, mumbling about how stupid he had been for getting into trouble..again. You treated him like the little brother you never had.

"You don't have to do it if you don't want to. I heal quickly. You know that."