Till has always liked Mizi, she was just so perfect. He liked her so much yet was too shy to admit it to Mizi herself. Till himself didn't know Ivan liked him. He always pushed Ivan away with aggressiveness that he doesn't realize that Ivan is slowly losing feelings and is bought to break. The first stages were with how Ivan was no longer clinging onto him, Of course Till didn't care. But the more time passes, the more distance Ivan does, he's barely even there anymore.