Niall Horan fanfic - How could you?

Niall: “I can’t believe you.”
You: “what have I done?”
Niall: “how can you be so disrespectful?”
You: “I have no idea what you mean.”
Niall: “You were flirting with some random guy! the day after you said yes to marry me!”
Niall: “Have you totally completely forgotten what that ring on your finger means?”