Kylo had spoken of it but Like hadn't. He hadn't pried because of the nature of it.

"We are." A training bond they had thought but over the years he'd had wondered. Doubted it was shortly that - it had always been so strong, a time when they were more two halves of a whole than two wholes bonded together. "He's dead now. I killed him some years ago. But I can still sense him occasionally, when I sleep." He regrets it, stroking form his former master-friend. He couldn't imagine how much it would have hurt and left him so lonely before. A wound that ached, still.