How do you know if you have found your soulmate?

I think that whether you have found your soulmate depends on what a person's definition is of the concept. In my opinion, you have found your soulmate when you have found that one person who makes you feel complete in all ways. Makes you happier when your happy, makes you feel better when you are sad and always amazes you in their own little ways. Another way to tell is what you see in their eyes or even in their actions