Answer: Gaura, perhaps. But it also may have been Potentilla, Deutsia, Ligustrum, Philadelphus or Abelia. Each fits your description. There are a number of books available to help you positively identify the shrub of your dreams. Visit your local library and start with Taylor's Guide to Shrubs (ISBN 0-395-43093-3) or Taylor's Guide to Perennials (ISBN 0-395-40448-7). Both books have color plates and complete descriptions of the most commonly grown plants. Best wishes with your search!
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