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There are just a few basics that need to be explored when you first start dating someone. Where is he from? What does he do for a living? Oh, and most definitely, when's his birthday? This isn't just for remembering when to send that "happy bday :)" text! Knowing a potential boo's zodiac sign can really help in understanding his behavior. Astrology helps us break down personality traits, pet peeves, and, yes, even dating patterns. It can be fun and informative to look up his sign, and how yours works with his.