What is Love?

This is the cutest thing ever, I love reading kids answers to questions.
Actual children’s answers to the question “what is love?”
“When someone loves you, the way they say your name is different. You just know that your name is safe in their mouth.” - Billy, age 4
“Love is what makes you smile when you’re tired.” - Terri, age 4
“Love is what’s in the room with you at Christmas if you stop opening presents and listen.” - Bobby, age 7
“If you want to learn to love better, you should start with a friend who you hate,” - Nikka, age 6
“Love is when you tell a guy you like his shirt, then he wears it everyday.” - Noelle, age 7
“Love is like a little old woman and a little old man who are still friends even after they know each other so well.” - Tommy, age 6
“You really shouldn’t say ‘I love you’ unless you mean it. But if you mean it, you should say it a lot. People forget.” - Jessica, age 8
“Love is when Mommy sees Daddy smelly and sweaty and still says he is handsomer than Brad Pitt.” - Chris, age 7 
“Love is when your puppy licks your face even after you left him alone all day.” - Mary Ann, age 4
“I know my older sister loves me because she gives me all her old clothes and has to go out and buy new ones.” - Lauren, age 4
“When my grandmother got arthritis, she couldn’t bend over and paint her toenails anymore. So my grandfather does it for her all the time, even when his hands got arthritis too. That’s love.” - Rebecca, age 8
“When you love somebody, your eyelashes go up and down and little stars come out of you.” - Karen, age 7
To me, love is piggyback rides through the mud, back rubs even if you're tired, and always having each others best interest at heart. Love develops and grows. It starts off with tingles and butterflies and in the end you cannot describe the feeling, but you know you would do anything for that person. 
What is your definition of love?