Perhaps... two people who have been through a lot can understand each other easier.

[Corrin might have flinched a bit when Niles leaned in (wondering what he was going to do) and relaxed at the nuzzle. He hummed in content and closed his eyes for a moment, just enjoying Niles' warmth and presence of another that he cared for. A smile was coming to his lips.

He turned his face to give Niles' cheek a gentle kiss.]

In truth, I've become fascinated with you. You've overcome so much. I've never had a chance to explore love, myself... But I do know I love you, Niles.