He doesn't want to imagine that loving him could ever destroy Kylo, though Ronan knows so many others that came before were destroyed by their love for him. He wants to be the thing that makes Kylo stronger, not weaker, and if he fails at that, is he worth loving any longer?

No. He knows the answer is no, and the right thing would be to say it. But he can't.

Because Kylo's a part of him, now, too. Some days, they're not separate for a single moment. He inhabits Kylo's body almost as often as he remains in his own, and even when they're apart, he can feel Kylo in his mind, wrapped around his thoughts like a vise. What would he be without his master, anymore? As good as a corpse.

Shame creeps up his chest as he confesses in a whisper, "I don't wanna ruin you. But I don't wanna go anywhere without you. Not Heaven or Hell or anywhere else. Not again."