"How do I love thee? / Let me count the ways..."
-Shakespeare (Sonnet 43)
Though one of the probably oldest saying there is about loving another person is that there shouldn't be any reason for you to love, deep down, you know that you have at least one reason why.
I love him because he makes me laugh, and also because he makes me cry within reason. I love it the most when he makes me cry from too much laughing.