There are many ways to say: "I love you" without saying the words, but you have the best way, I think.
When you want to tell us you love us, you take your two index fingers and make a triangle and Daddy and I touch your index fingers with ours to make a pyramid and then you say "Dada, Mama, Jaaaah" and we say - "that's right, buddy. Family. Daddy, Mommy and Jack".
It melts my heart every time.
God, I would recommend having a child to ANYONE! :)