Crappy

So just btw, this poem has literally nothing to do with any sort of heartbreak I went through. Literally nothing. I wouldn't lie if it it did.
Here:

I lived in a world called happy
You were there too, for infinite time
I left for selfishness went out of vogue
I left that happy in it's prime

My castle of cards crumbled
Your mistakes got you left behind
You're still happy in your world
I'm the one wishing I could rewind

We'll laugh and cry in different worlds
I live in a different kind of happy
We smile at each other's plight
And cry at our own ones, crappy.