Responsibility for One’s Chastity

Do you not know that your bodies are members of Christ? . . . For you
have been purchased at a price. Therefore glorify God in your body (1
Corinthians 6:15, 20).

In earlier times, the boy often relied on the girl (for the most
part) in communicating to him if or when he was beginning to be
unchaste in his advances toward her. Thus, courtship would sometimes
involve the boy going as far as the girl allowed him, while the girl
tried to fend him off until marriage. Today’s statistics on
pre-marital sex demonstrate the weakness of this principle: If the
girl doesn’t fend him off, the man will tend to go as far as he can.
Naturally, this often results in fornication.

In my experience, the man must take responsibility for his own
chastity. Not only should the woman help him behave chastely, but the
man also needs to help the woman behave chastely. Teen boys should be
taught to treat girls chastely and respectfully even if the girl
seems unconcerned about it, or even acts in an unchaste manner. (Of
course, if she continues such behavior, the dating relationship
should be terminated.) …(ewtn.com)