I think you'll find Hot Chocolate lifted the line from somewhere else anyway 
Some phrases are in common usage -- those we generally refer to as cliches, which is why we crack down on them here. It's nice to keep your poetry fresh, though occasionally a cliche will creep into everyone's poems, it's hard to stop it. Extra eyes are very helpful. If it's unconscious, it's rarely more than a couple of words or sometimes a whole line, so what we really mean plagiarism to be is a conscious attempt to pass someone else's unique phrasing off as your own.
Some phrases are in common usage -- those we generally refer to as cliches, which is why we crack down on them here. It's nice to keep your poetry fresh, though occasionally a cliche will creep into everyone's poems, it's hard to stop it. Extra eyes are very helpful. If it's unconscious, it's rarely more than a couple of words or sometimes a whole line, so what we really mean plagiarism to be is a conscious attempt to pass someone else's unique phrasing off as your own.
It could be worse