Before having sex, consider that "Anyone who looks at a woman lustfully has already committed adultery ..." (Matthew 5:28) We ask "So why just look?" The same Sermon on the Mount says,

• anyone who is angry with his brother will be subject to judgment
• if your right eye causes you to sin, gouge it out and throw it away
• anyone who marries the divorced woman commits adultery
• do not resist an evil person
• if someone strikes you on the right cheek, turn to him the other also
• love your enemies and pray for those who persecute you;
• if someone wants to sue you and take your tunic, let him have your cloak as well
• if someone forces you to go one mile, go with him two miles