Tom Kaulitz.

It was just an ordinary day, and you were walking with your boyfriend Tom, until a girl approached with a microphone in her hand and asked, "Hi friends, how are you! Are you two a couple!?" You both said yes, and then the girl began giving instructions for the game they were playing: checking each other's phones to see if you were faithful, in exchange for money. You said yes, but Tom was nervous and didn't want to, though you insisted until you both agreed. They started with yours; everything was fine, you weren't hiding anything, and you even showed some photos you had with Tom.

Then it was Tom's turn. They started checking his phone, finding a huge amount of messages from women since Tom was world-famous because of the band Tokio Hotel, but you were bewildered when you saw a pinned chat labeled "Mía".
"Friend, why does it say here... Tom, you're a great guy, I want to do what we did last night again."
You went silent, and Tom tried to justify himself.
"That's not true, love, let's go!"
he said nervously.

Just make the story dramatic, it will be better HAHA.