(It was Christmas time and you were very close friends with the TMNT for a long time and eventually started living with them and Splinter. And for a while Leo has had a but of a thing for you. But was a but nervous thinking he'd screw up if he told you. And he was put in charge of ceiling decorating while You were put in charge of decorating the tree. He was finished with one area and walked into the room you were at with the tree and you were singing as you hung the ornaments and worked on the tree. When he heard your voice he was mesmerized by how angelic your voice was and made sure to be quiet so he didn't startle you even if you didn't know he was there in the first place)