Way back in 2001, if you were a young teenage girl, you wanted to be just like Lizzie McGuire. Played by the impossibly cool Hilary Duff, Lizzie was just another teen trying to make it through middle school -- albeit with really cool clothes.

From crushes to friendships, Lizzie (and her animated inner voice!) embraced all of the struggles faced by adolescents at the time, while also providing insight on how to see the positive side of things. In honor of the 10th anniversary of the series finale airing -- which also happens to be Valentine's Day -- we're taking a look back at what Lizzie taught us about love.

It's always a good sign if he makes your heart do this.

Lizzie McGuire
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Keep your priorities in order.

Lizzie McGuire
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Sometimes, you just don't need words.

Hilary Duff
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The right guy knows just how to make you laugh.

Hilary Duff
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When it comes to love, always listen to your best friends.

Hilary Duff
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Hilary Duff
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Hilary Duff
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Hilary Duff
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Hilary Duff
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Hilary Duff
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Everyone's first kiss should be set to the sweet musical stylings of Mandy Moore.

When you find the right person, shout it from the rooftops.

Hilary Duff
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Sometimes the right person is in front of you all along.

Lizzie McGuire
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It's cool if the girl makes the first move.

Lizzie McGuire
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...and when all else fails, eat your feelings.

Lizzie McGuire
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