Don't Know Lyrics

I am trying to find out the lyrics to one of Mazzy Star's first singles I heard on the
radio. I can only remember some of the lyrics going: I try to say goobye and I
crumble, i can't speak etc. Something like this.
Mazzy Star - Don't Know - http://motolyrics.com/mazzy-star/dont-know-lyrics.html
Can you help?

Tom