I got my first unsolicited I love you from E tonight (actually I got two of them). Both times she gave me a hug around the leg and said "I love you momma." I was melting!
The second one was pretty funny. She said "hi momma, how are you today?" after I answered, she said "I love you."
I'm guessing they were working on it at daycare, because she also told me "happy mother's day." But, even if they practiced all day, I don't care one bit. It was wonderful!