18 Any man who divorces his wife to marry another woman commits adultery, and the man who marries the woman divorced from her husband commits adultery.
Bible verses about "boyfriends" | Williams
Luke 16:18
1 Corinthians 6:9-11
9 Do you not know that wrongdoers will not have a share in the kingdom of God? Stop being misled; people who are sexually immoral or idolaters or adulterers or sensual or guilty of unnatural sexual vice
10 or thieves or greedy graspers for more or drunkards or slanderers or swindlers will not have a share in the kingdom of God.
11 And these are just the characters some of you used to be. But now you have washed yourselves clean, you have been consecrated, you are now in right standing with God, by the name of our Lord Jesus Christ and by the Spirit of God.
Hebrews 10:26
26 For if we go willfully sinning after we have received full knowledge of the truth, there is no sacrifice left to be offered for our sins,
1 Corinthians 7:2
2 but because of so much sexual immorality every man should have a wife of his own, and every woman a husband of her own.