truth leads to happiness remember that
bullshit. Thats a fallacy that ignorant people tell themselves when they are lying to themselves.
The cost of truth is suffering. It is up to the individual whether they transmute that suffering, but the end game is not happiness. Truth costs. You must sacrifice in order to obtain.
You're both using extremes. But I agree with him that truth eventually leads to happiness. Or more exactly, leads to real happiness not based on illusions. But that doesn't mean you won't have to deal with suffering at all, or that you always suffer when you see the truth.