I get why he hasn’t told him yet. Like how to do tell someone “ i know who your bio father is. And he is one of the people that ruined my life and also has a son that tried to kill you, me, and our unborn child at one time. And you know also may have had a hand in killing your other father. Ohhhh yea and he may also be blackmailing me to do his dirty work.”
Personally that sounds like a hard conversation to me.