The man has seen the emotional side of the mother, so the man knows the woman’s emotionality. But the woman has never seen the sexual side of her father, so the woman really does not know man’s sexuality that much.
Do you get this? The man knows the woman’s emotionality, but the woman does not know the man’s sexuality. The woman takes the man almost as some kind of male-friend, sakhi saheli (dear female friend). “I have found a male saheli (female friend)”—that’s the boyfriend. But the man fully knows what the girlfriend means to him: the girlfriend means a nice consumable body.
So, the man is deceiving. The woman is not deceiving so much. The woman is more morally upright in her internal calculation than the man is.