Prince never heard such doves cry

I saved the day, put the bad in my back pocket so you could be ok.
Now I'm too weighed down with problems to clear away my own.
Knights are named so because they're in the dark and alone.
There's always a price to pay for those that care.
I am heavy hearted with wide-eyed tears.
I'll send the one from my right eye for the good times,
one from my left eye for the bad...
have them meet at my lips to kiss you goodbye.
I can't break my back again with all these heavy breathes you make me take
There's a star in the sky for every problem i ever had.
Have them be your (k)night tonight.
Maybe then you'll see that even the brightest things endure tragedy.
Where is this hero's hero? Who's going to hold my helping hands?
When can this saver feel safe again...