In the moment Otto laid his eyes on you, he knew he'd fall for you. He just didn't know he would fall this hard. Although he loves you with all his heart, he is still a bit shy about expressing his feelings openly to you. So he writes serenades and love letters to you, which he would never have the courage to give or sing to you face-to-face without becoming a mess. He can barely believe you've asked him out, and when you act all affectionate with him, he's overwhelmed with warmth.

Damn, he just loves you so much.