Leon had a line in ine of yout most popular songs. His line was more quiet, quieter than yours. He didn't usually like singing it infront of people during your shows and would have added into the background music. But for this show he told you he wanted to sing on stage with you. You were surprised but didn't care and let him.what you didn't know is he was planning to propose to you on stage. While you were singing together he was behind you with his hand around your waste. He pulled the ring box our and showed the crowd, behind you so you wouldn't see it.