Thank you very much rizen1, this thread is very accurate, even non christians would agree that sex creates a strong bond and connection that is very harmful for the unmarried couple to share it could hurt and confuze them very much, God warns us for our own good, because we'll get emotionally attached one way or another.

Anything beyond light kissing, hugs and holding hands could be destructive.(you even should wait a long time before doing these)