Can You Define Love?

Have you ever looked up the definition on love? One online source I found breaks down love in five different ways:
noun

1.

a profoundly tender, passionate affection for another person.

2.

a feeling of warm personal attachment or deep affection, asfor a parent, child, or friend.

3.

sexual passion or desire.

4.

a person toward whom love is felt; beloved person;sweetheart.

5.

(used in direct address as a term of endearment, affection,or the like): Would you like to see a movie, love?

 Honestly, I think love is one of the hardest words to write a definition for. It invokes such strong emotions in all of us, and encapsulates such an important feeling.  What do you think? Could you sum it up in different words?