The lyrics describe a young speakerโs sudden excitement after meeting a boy named Bill. At first, the feeling is immediate: she says her heart โstood still.โ As the song continues, her interest grows into confidence and hope. He notices her, picks her up for a date, and walks her home; she imagines that she will eventually make him hers.
โHer heart stood stillโ is a vivid way to say that she was startled or deeply impressed, not that her heart literally stopped. โHe caught my eyeโ means he attracted her attention, while โhe looked so quiet but my, oh myโ suggests that his calm appearance hides a strong effect on her. The repeated โda doo ron-ron-ronโ is playful, nonsensical singing rather than a phrase with a clear literal meaning; it adds to the songโs buoyant, excited mood.
The song presents attraction as lighthearted and promising, but the speakerโs hopes are not yet a settled relationship. โSomeday soon Iโm gonna make him mineโ expresses desire and confidence, though it may be more of a wish than a certainty. The lyrics give little information about Billโs feelings beyond his attention and their date, so the romance is seen mainly through the speakerโs eager point of view.