My t and i would both say i love you, but never on the same day, and the other person would respond with thank you, and give the corresponding i love you a few days later at an appropriate time.
I dont really know why my family didnt love me. I was so dumb, i wasnt even aware they felt that way. I have some ideas now as to why they didnt - my brother didnt want a baby sister, and my mother didnt want to upset my brother, and my father didnt want to upset my mother. So as they say, sht rolls downhill! Darn those immigrants anyway.