Royce had never told Ari he loved him, not in so direct a manner at least. Ari had been waiting on those words for such a long time, and he was riddled with pain that Royce would forget saying them. He couldn't leave that part in and erase the rest of the day without leaving a tendril others could follow. His mind reached into Royce's and began the work, sorting some things and ripping out others. He gave fake memories of a day spent together, of Royce being allowed to feed on a drunken at Ari's permission, and then the two of them making love here in the motel.
It was a wonderful, beautiful lie, and Ari wept for the first time in over five hundred years. He wept into his love, who he placed in a trance so he could do his work. It was a cruel irony that Royce's growth wouldn't be remembered, just so Ari could keep him safe. In this moment, he hated Charon for perhaps the first time. It was fleeting, and replaced by guilt, but it was there and real. He quickly regained control of himself, and slid next to Royce, holding him in a proper spooning.
As Royce came to, he'd feel Ari's arms around him, and soft lips kissing the back of his neck.
"Did you have a nice day Royce," he asked, as if he'd had a nice day too. Lying was hard, but it was easier when doing it to Royce. Ari learned to lie from him after all.