As a good initial principle here, we should affirm that sex itself (and sexual activity in general) is not inherently negative or sinful.
On the contrary, in the proper context, it is a kind and good gift of God.
Whatever you did, as you now think about it, does it inspire a comfortable peace or an uncomfortable shudder to remember that Father, Son and Holy Spirit observed it all?
Dating without commitment
With respect to pre-marital, romantically oriented kissing, we're clearly talking about an area about which reasonable believers can (and do) disagree.
Let me lay out what I view to be applicable biblical principles and passages on this topic.
Michael Lawrence and other able Boundless authors have written before about the wonderful gift of sex, so I won't belabor the point except to repeat that the Scripture passages on sex, taken together, make very clear that God instituted sex for purposes of procreation, pleasure, intimacy, holiness and — ultimately — for His glory.
God instituted sex within marriage as part of His design of the family (Genesis ).
I am obviously not saying that hugs and kisses of affection or greeting to relatives and the like are out of bounds. In some cultures, kisses of greeting — between members of the same sex or of the opposite sex — as well as hand-holding and other forms of physical expression during normal, non-romantic social intercourse, are more common. You might even be able to talk me into the notion that , "non-leaning-in" hugs of greeting, sympathy, etc.
between men and women who are not romantically involved are OK.
It is certainly true that no passage of Scripture says — in so many words, at least — "thou shalt not kiss before marriage." Having said that, I submit that there is a strong argument to be made from Scripture that there is sexual relationship outside of marriage.
The argument becomes clearer when we look at some of what the Bible has to say about 1) sex, 2) our relationships with other believers and 3) sexual immorality itself.
Some translations render the word "wrong" as "defraud." To defraud someone is to deceive that person — in this context, to imply a commitment that does not exist by committing acts with someone that are appropriate only in the context of a particular relationship (i.e., marriage) to satisfy my own "passionate lust." To commit sexual immorality with and against someone, far from showing the "love" to which Scripture calls all believers, is to act like those "who do not know God," and this passage calls such acts "sin." Now, one obvious counterargument to the point I intend to make is that the Scriptures I've cited above just beg the question of what behaviors violate those passages.