I'm fairly certain that this is what the song means:
When the song opens with "Someday you'll see her and you know what I mean", it is addressing the listener, describing what the girl you fall in love with will seem like.
-She won't be dependent on your approval
-She won't try to make you be with her by hogging you
-You are going to feel like something's missing after she leaves
"This side" refers to how drastically alien being in love feels from not-being in love.
I'm fairly certain that this is what the song means:
When the song opens with "Someday you'll see her and you know what I mean", it is addressing the listener, describing what the girl you fall in love with will seem like.
-She won't be dependent on your approval -She won't try to make you be with her by hogging you -You are going to feel like something's missing after she leaves
"This side" refers to how drastically alien being in love feels from not-being in love.