What is the interpretation of the song Tonight by FM Static?

Answer 1

This song is about loss and the idea of what could have been. It's about the songwriter's brother who died when they were younger. It's a song about remembering the times they could have had together if the brother was still alive. It is also inspired by the person who told him about Jesus.

Answer 2

He's talking about a person in his life whom he loved very much. That person left (by dying, or leaving for a good reason or something) and he misses them very much.