The speaker falls for a stranger at Cafe Trieste, a red-haired girl sitting beside them. They exchange almost nothing, just her passing on the Wi-Fi code, yet the speaker's pulse races and they imagine a shared, almost scientific "convection" of feelings between them. It's a small moment blown up into something big.
Then the mood turns. The speaker admits they'll never see her again and insists that's for the best. If she were the last love of their life, what would become of all the other crushes? The poem suggests these infatuations come and go daily, each one bringing the same longing. By the end, the speaker gives up on the coffee and the glancing games and asks for red wine instead. The tone is playful and self-mocking, with a hint of loneliness underneath, as if the joking is a way of softening a real ache for connection.