If I Watch a Concert Alone, Am I the Backup?

Xu Mo took his girlfriend to Lao Xue's concert. Girlfriend Lin Xue was selected in the interactive session. "Excuse me, are you here alone?" "Yes, I came alone" "Don't you have a boyfriend to come with?" "I don't have a boyfriend" Xu Mo was dumbfounded. Am I a spare tire? Lao Xue also saw the reason and invited Xu Mo up. The song "Unforgettable Day" shocked the audience. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.