Isaac listened, eyes still closed, to all those words, saving them to a memory he would never get to look at again.

He knew the moment the poison reached his heart, knew it in the way it felt like heart burn but only a million times worse. He knew he only had seconds and he used the last of his strength to open his eyes, hoping they were blue, and worked to meet Stiles', wanting them to be the last thing he saw, so full of love. He wanted to see Stiles' smile and he worked to tell him so, choking on the words, barely able to do more than whisper. "Please... Smile for me. I... Want it to be the last thing. Please. I love you."

Isaac knew, he knew that as soon as he saw it, his heart would stop the way it always did in the light of that smile. And he knew that it would be the final time.