Fight, fight fight for this love

My 4+ yo E now likes to sing the song by Cheryl Cole that goes 'fight, fight fight for this love....'. E would sing that chorus over and over again.

A couple of days ago, E went to me and asked me, 'why do we need to fight for this love?'

I just went blank and laughed, having absolutely no clue what how to answer that. Then E said, 'maybe when we put the word fight and the word love together it becomes a different word...'