I agree partially with Lilyfluer
The amount of moralizing that we muslims seem to do with respect to pre-marital sex amazes me.
You have to understand the reason for its prohibition in the Quran in the first place. These had to do with
- STDs
- Unwanted pregnancies
- Responsiblity in caring for the children
All of these things can be mitigated through correct application of laws within society and by responsible behaviour as adults.
I think the key admonish in the Quran is against engaging in relationships with women in secret. I don't think there is anything wrong with a boyfriend and girlfriend type of relationships even if there is sexual intercourse. As long as it's open and acknowledged by ones family and friends and the consequences of pregnancy are borne by the responsible individuals, I'm not sure it's haram. "Those to whom you rightfully belong" can be interpreted as those to whom you've committed and they to you.
I come from a family where my parents had an arranged marriage and after 45 years it's painfully obvious that had they even gotten to know eachother for a year or so before hand they probably would've never gotten married. And even now they should be divorced but our culture doesn't permit it.
Prohibitions against pre-marital intercourse are primarily cultural, historic, and socio-biologically based. They have nothing to do with God or spirituality.
My .02
Raz