What's the Name of That Book??? discussion

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SOLVED: Children's/YA
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SOLVED. Futuristic YA about a girl who is not suppose to have emotions [s]
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Hi! I can't remember the name of a Young Adult book that I read 2-3 years ago. The main character was a girl who was a servant. In the setting, certain people were clones (I think) of people who broke the rules. Anyways, the girl, and others like are, are hard to come by--they are usually only found in the homes of the rich, and they do not express any emotions.
So, this girl realizes that she does feel things, such as love, happiness, and sadness. She eventually falls in love with a boy, who treats her differently than the others, as do his parents. Long story short, she jumps off a cliff into the ocean, and she swims to a place where people like her go to be safe. There, she finds out that the girl she was cloned to look like is actually alive.
I really would like to read this book again, so any and all help is appreciated!