https://youtu.be/uNm3dhi3HY0?si=qHh-R5eCrt8wd2a0 The bible views all sexual activities outside marriage as a sin, in the book of 1 Corinthians 7:2 said that the bible suggest marriage as the solution for sexual immorality, but since sexual immorality is what exist among men now each man should have sexual relation with his own wife, and each woman with her own husband. Hebrew 13:4 said that marriage should be honored by all, and the marriage bed must be kept pure, saying that marriage is the only sanctioned place for sexual union.
The bible ask us to abstain ourself from situations that will cause us to sin, sleeping on the same bed when you are not yet married to the person even without having sex can be a temptation. The bible told us that sexual desire should be fulfilled within marriage, and instructed us to marry rather than other cases for strong passion.