Little love song is built from short, quiet commands, almost like whispers. The speaker asks someone to go along, to stay close, and to "keep me from the ice." That last line carries the fear: ice suggests numbness, isolation, perhaps even death, and the speaker seems to need another person as protection against it.
The final two lines shift the tone. "Night and the river / gun for our hearts" makes the dark and the moving water feel like hunters, closing in on both people, not just the speaker. The word "gun" is sudden and violent, and it turns a gentle request into something more urgent. Love here is not decoration or romance in the usual sense; it is shelter. The mood is tender but anxious, intimate and a little frightening, as if the speaker is holding on tightly because the world outside feels dangerous. Its smallness matches its feeling: very few words, and each one matters.