1 Corinthians 7:2-4

2 However, because of the temptation to sexual immorality, it is better that each man have his own wife, and each woman her own husband.

3 The husband should meet his wife's sexual needs, and the wife her husband's.

4 The wife's body doesn't just belong to her, but her husband; and similarly the husband's body doesn't just belong to him but his wife.