Marriage is supposed to be a beautiful union of two souls, but if you're not careful, it can quickly become a union of two egos. That's why it's so so so important to marry your best friend, because who else can you laugh your a$$ off morning, day, and night? See, when you build your relationship on the foundation of friendship and laughter, you're not just promising to love each other for better or for worse , but also through the occasional farts and embarrassing moments. Trust us, there's no…