Ladybird, thre Bible speaks very little about sex, but such words they are!

Read Song of Solomon (Canticles).  This book handles tastefully the issue of sex, marriage, rearing families, and relations in the bed.

"Marriage is an honorable institution in all, and the bed undefiled, but fornicators and adulterers, God will judge," says James. 

Rest assured that God knows our humanity.  He above all knows how easily a person can be tempted to sexual misconduct.  God will consider what drove us to our depravity, God will forgive us when we ask, all He asks is that we forgive as we are forgiven.