For me, it would come down to if I care more about my dad, or what my dad will say to me. If you say nothing and things go sideways you will regret your decision. If you talk to him at least you tried. No guarantee. Obviously, I don't know you or your dad. There are people that I wouldn't even waste my time with because I know them well enough to know they would just attack me as you say. I know my dad would never do that. At least I don't think he would. Even so, I would give him the chance to come clean because our relationship.

I'll leave it there. Godspeed sir. Maybe sleep on it. If you believe in God, pray about it.