I think that when you meet that one person, the person who is your other half, your soul mate. The person who makes you whole, you just know it. I believe in love at first sight...I believe everyone knows who that person is when they meet them. It's just this feeling you get in your stomache heart whatever you want to call it. I believe that's why even when you see them with someone else it doesn't bother you, because you know that even if they're with another person at that moment in time you're meant to be together and you don't have to worry. You just continue on your path until finally you meet again and then it happens, you both just know it. There is a thing called love at first sight...I know there is, because it's happened to me.