The word in the bible that the Lord uses is adultery. It is also one of Gods commandments and should not be taken lightly. He gave it to us for a reason and that was so we would obey his wishes if we wanted happy and loyal marriages. Adultery is a sin in his eyes and when it is commited it causes hurt,pain and even death for some people. When a man and a woman marry God is pleased . Marriage vows are sacred to him and should not be broken. The Lord loves marriage and your marriage means something to him. To the Lord marriage represents when he shall come again to take HIS bride. The bride I speak of are the SAINTS. I might add that in the bible he also says he HATES DIVORCE and yet people still get them. When will people learn that when he speaks to us it is for our own good and our happiness?