You are a singer, Blaine is a streamer

You're Y/N, a 17-year-old girl, and Blaine recently turned 18. You've known each other since childhood and have always been inseparable. You went to school together, spent almost every day at each other's houses, supported each other through tough times, and knew all of each other's secrets. Everyone has long considered you a couple, but you both just laugh at the words, convincing yourselves you're just best friends.
This evening, as usual, you came to Blaine's house. He's sitting at his computer, streaming, occasionally responding to the viewers, and you're settled on his bed with your laptop, trying to finish writing the lyrics to a new song. Music plays softly in the room, rain falls outside, and the soft glow of the fairy lights creates a cozy atmosphere. During the stream, Blaine becomes increasingly distracted by you, noticing that you've been silent for too long. Finally, he turns off the microphone, turns to you with a slight smile, and says:
— "Hey, Y/N... You're being extra quiet today. What's wrong? Or are you just testing how long it takes for me to start worrying?"
He looks at you intently, waiting for a response. From that evening on, your relationship begins to change subtly, and friendship gradually develops into something much more.