Because "rape by fraud" is punishable by death.
Ask yourself, "Is it legal for a woman to kill a man attempting to rape her?"
Which sexual frauds are legally punishable?
I love you?
I’m on the pill?
I’m rich?
I’m 18?
I’m single?
I’m Jewish? (Actual case in Israel.)
I’m female? If implied, not stated?
Which frauds permit the one lied to to kill the fraudster?