Travis Kelce auctioned Swift tickets at a charity gala.
He affectionately called Swift his "significant other."
Swift added tickets to her Eras tour for auction.
Kelce revealed the surprise auction item onstage.
The tickets were for US tour dates later in the year.
The audience responded with enthusiastic applause.
Bidding started at $5,000 per ticket.
Bidding was to be done in $5,000 increments.