1 Corinthians 7:36-37

36If any man thinks he is acting improperly toward the virgin he is engaged to, if she is getting beyond the usual age for marriage, and he feels he should marry — he can do what he wants. He is not sinning; they can get married.

37But he who stands firm in his heart (who is under no compulsion, but has control over his own will) and has decided in his heart to keep her as his fiancée, will do well.