The song "I'm Sorry Nathan" by Nathan depicts a situation where the singer has found the person who wronged Nathan and is apologizing on their behalf. The lyrics suggest that the singer is seeking redemption and is hopeful that Nathan will be satisfied with the resolution. The phrase "m8" is likely a colloquial term used as a friendly way to address someone, similar to "mate" or "buddy" in American English. The overall message of the song seems to be about taking responsibility for one's actions and making amends with those who have been hurt.