If you have sex outside of marriage you are immoral. So don't have sex outside of marriage, if you don't want to be immoral. If you don't want regrets or to feel bad, don't have sex outside of marriage. If you don't want to get hurt, don't have sex outside of marriage.
If you want to maintain your honour to God, don't have sex outside of marriage. Also if you want to know who you can trust to date, you can't trust anyone who has had sex outside of marriage.
High Church and Sacherverell!
https://www.youtube.com/watch?v=JSAd3NpDi6Q