Place it as the final line of a short fan edit, after the visuals have built up to the confession. Follow it immediately with a Yeah reaction as the answer, then let the edit end there so the exchange ends cleanly.
Über diesen Sound
This is a brief spoken clip of Hanni saying 'I love you' in a soft, gentle voice, lasting just over two seconds. It feels warm, sincere and a little shy, like a quiet message meant for one person rather than a crowd. The simple delivery makes the affection land directly, turning three small words into a personal note.