Dave Bonta's three-line poem pictures two moths speaking to each other, and the picture is strange and lovely. Moths are drawn to flame, so the "letters of fire" suggest that their way of communicating is also the thing that could destroy them. They write to each other in light and danger at once. The title, "Flamboyant," fits: it means showy and bright, and it also echoes the idea of flames.
The speaker seems to feel a mix of tenderness and defiance. The last line, "still free," lands quietly but changes the mood. Despite the risk, these creatures haven't been burned or caught. The poem doesn't say whether the moths are stand-ins for people, but it's easy to read it that way: perhaps two people who talk in bold, risky language and refuse to be held back. The mood is hushed, a little thrilling, and hopeful, like a small act of courage carried out in the dark.