According to the query of related music materials, "I will love you for many, many years" is the prelude lyrics in the music "Crossing the Moon", which has no other meaning, but is written to rhyme the end of the whole song.
The song "Crossing the Moon" was sung by Guagua, a famous online singer. The overall lyrics of the song mean "on behalf of art, we should comfort restless people, alert comfortable people and let future generations remember them deeply". That's how the song Crossing the Moon was written. Cherish the people in front of you, cherish the relatives, friends and lovers around you. Cherish each other, just cherish each other.