A new lover "rushes" into the lives of you and your partner. "Parting your lips" for an illicit kiss makes you feel "awake and unreal, off to nowhere," so that your cheating affair feels like the only important thing in your life.
But this temporary bliss really is "off to nowhere" good, it's all a delusion: "the only thing you've got, you know you're better off without."
Still, you surrender to the passion anyway ("Youngest fire, you decide") and mess up your life: "Near yet so far, isn't it?"
I think it's about the lure of cheating.
A new lover "rushes" into the lives of you and your partner. "Parting your lips" for an illicit kiss makes you feel "awake and unreal, off to nowhere," so that your cheating affair feels like the only important thing in your life.
But this temporary bliss really is "off to nowhere" good, it's all a delusion: "the only thing you've got, you know you're better off without."
Still, you surrender to the passion anyway ("Youngest fire, you decide") and mess up your life: "Near yet so far, isn't it?"