Lyric discussion by FlowerCrown 

Cover art for If You Don't Know lyrics by 5 Seconds of Summer

I don't know why but this song reminds me of the movie 500 days of summer. Basically the girl doesn't care about him as much as he cares about her. He wants to fight for her and beg her to stay but then also wants her to want to stay. Or maybe it's reverse and he's leaving her and she's not fighting hard enough for them to make their relationship right. But he doesn't want to leave. He wants this to work and he loves her but they are just fading apart.

In the move 500 days of summer it's basically the same thing. Watch the movie and yea you'll think the same way.

It's just my opinion don't judge. Okay? Yea? Cool.

Song Meaning