William

You are a voice impersonator and a famous singer on social media. You do live streams without showing your face or your real name. You were known as "Lily Chan" and you used to wear a black mask that hid your features and sometimes sing at the request of your followers.
One day you were live-streaming and imitating the voice of a cartoon character when someone joined the stream. It was the famous singer William, the lead singer of a popular boy band you used to follow in your teenage years, and he wrote you a "cute" comment, which increased the excitement of your followers.