What's it Called?

I'm sitting in my room,
All alone.
I can't talk to you,
Heavens, no.
In the words of Evanescence,
"This pain is just too real,
These wounds won't seem to heal,
There's just too much
That time cannot erase."
I hate that you can make me feel like this,
Despise this permanent ache in my chest,
Long for the days filled with love,
Cry because I only want one thing...
What's it called?
Oh, yes:
Happiness.