What is difference between love,romance and affair?

I believe that question can only be answered by everyone by themselves!! How is someone else to define those terms for me??? What love is for me, may not be it for you and so forth...I believe romance is associated with lust and is more on a physical realm. An affair to me is when someone is in a committed relationship and chooses to persue more relations outside of the relationship! Come on..love??? Love is so many things....