My oldest sons father is not in my sons life. He has been incarcerated for the past 4 1/2 years now, so my youngest son is obviously with another man who has been wonderful to my oldest and has taught him so much and is always there for him. Now ever since the baby has been born he has not shown any favoritism between the baby and my oldest, and lately my oldest has started calling terry daddy every now and then. It doesnt bother him at all but is it ok to let him do that? We have sat down and actually talked to my oldest about his real dad and how terry is like his dad in a way as he is there for him and loves him and helps take care of him and he seems to understand, but im just not sure if i should let him call terry daddy?