Chorus goes like this cause it's always raining in my head forget all the things I should have said.

The song is called "Epiphany" and it's by Staind from their album "Break The Cycle" (http://en.wikipedia.org/wiki/Break_the_Cycle).

FULL LYRICS HERE! (http://www.sing365.com/music/lyric.nsf/Epiphany-lyrics-Staind/689BDB7E6D0547E248256A560009D9FE)