The choruses express the sentiment that because she knows him so well, none of these things matter.
Four takes of the instrumental track plus rehearsals were released on this bootleg, as well as two backing vocal overdubs and Brian's lead vocal overdub.
It was one of the first songs that Brian wrote while under the influence of.
The second verse, half of which is repeated after the bridge, discusses his jealousy and insecurity, hinting at his emotional abuse of her.