Lyric discussion by Lucymistletoe45 

Cover art for Life Like Weeds lyrics by Modest Mouse

I agree with quite a few people who commented on this song. I believe that "And in this life like weeds, you're just a rock to me" in the very beginning suggests, that this person of whom he is speaking of is more than just a careless, destructive weed, but she's a rock to him. She knows what she's doing confident and grounded.

But responding to the people touching on the change from "You're just a rock to me" to "You're a rock to me" is correlated to the change of tone in his voice. At first he's fed up at himself, maybe ashamed of not tell her that he loves her. And then later, becoming calmer, almost mourning, kind of excepting his mistake for what it is.

Just my take. I really appreciated all of the comments on this song!