Cannot Sing Apart

[Verse 1] She takes the high one, I take low we learned it in one afternoon our mother in the other room said neither one of you is in tune [Chorus] But we kept on, we kept on until the thirds came clean and now we cannot sing apart and nothing comes between [Verse 2] She married and she moved away I kept the same old key and when she visits, first thing said is: sing the one with me