我难忘的一件事

One day Mon said to me "I love you. son"
I was very happy that day and went to school.
6 o'clock in the afternoon, i went back home.Dad was also back and there was a big cake on the table.
I asked him "why there is a cake? can i eat it?"
Dad answered "No.Mom should eat first."
"why?"I asked again.
"because it's your mom's birthday"
then i remembered mom said "i love you" to me in the morning.
it was mom's birthday,but i didn't know that.
and she said "i love you"to me.