Answer: Although you've given quite a bit of detail in your description, I'm not able to identify your plant. There are literally hundreds of plants that could fit your description. You may be able to find a similar plant in your local nursery (one with a tag), or you can try taking one of the stems to your nursery to ask if they can identify it. Take a flowering stem if possible - flowers make any plant easier to identify.
Best wishes with your new plant!
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