"I won't, Jack. I promise, I won't. I don't think I could enjoy life if I had to drink blood, or be allergic to sunlight. I still want to be myself. And if anyone ever pops up and insists they can make me invulnerable to harm without some awful catch, I wouldn't accept without talking to you first. I can promise that too."

He sighs, shifting closer to Jack so they're touching, side to side, down the length of their bodies. "And I'm sorry I assumed you knew about Cassandra. I shouldn't have. I know you didn't grow up with the same things I did, and I should have expected Greek mythology might have gone out of style. You probably have 21st-century mythology instead," he said wryly.