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1. You start saying things at the same time.
2. You begin to use each other's catchphrases.
3. You start finishing each other's sentences.
4. You understand each other all too well.
5. You become each other's Valentines.
6. When you're on the same page about everything.
7. You have the same interests.
8. You always order the same meal at restaurants.
9. You can't distinguish yourself from your roommate anymore.
10. You get the same answers for every BuzzFeed quiz you take together.
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