"I love you, too."
For what other reason would he be doing this? Abandon his life, all he had for just one person?
Ryuutaro lets himself be petted, closing his eyes. It would be fine... He just needed this moment to convince himself of that.
But at the apology he opened his eyes and looked up at Hayato's face.

"Don't. This is my decision. Don't say you're sorry" - not even if it was just consolation. Ryuutaro didn't want to hear it. He had given Hayato his everything, the least his boyfriend could do now was accept it properly.
"I'm not doing this because anything forces me to. I'm doing this because I want to."