The speaker looks back on a love story that moves from city to city: Vegas, Paris, New York, Alaska, London. Each place carries its own feeling. Vegas is bright and loud, Paris is romantic, New York is where the speaker truly comes to see how wonderful the other person is. Then things turn colder, both literally in Alaska's ice and emotionally in London's heavy rain, where the speaker's soul is crying.
By the end, the speaker is lost. "Right now, i don't know where i am" suggests the relationship has ended or drifted away, and both people are far apart. The "paper town" in the opening and closing lines is a place that exists only on a map, which makes it a good image for a love that feels real but may be out of reach. Still, the poem ends hopefully. The speaker believes that place is out there, waiting. The mood moves from excitement and warmth to sadness and confusion, then settles into quiet, stubborn longing.