Lyric discussion by anneliseHASabrain 

Cover art for Not Meant to Be lyrics by Theory of a Deadman

They're in a relationship. Duh. But for some reason (the whole "it" that he can't give her) they won't work and he knows it. He's sad about knowing all the good times will be gone. He's trying his hardest to keep her happy but even in his efforts they both end up unhappy.

Probably.