Marry your best friend. I do not say that lightly. Really, truly find the strongest, happiest friendship in the person you fall in love with. Someone who speaks highly of you. Someone you can laugh with.
The reason why I like you? There is no reason. There should be no reason. If you love someone because of a reason, when the reason is gone, you heart will change too. I like you without reason. I like you because you are you.