kiss passionately ... turn out the lights
If you are having safe sex and love each other and are intending to get married when circumstances permit, I don't know what the problem is. The main thing about sex is that people sometimes don't handle sexual relations wisely, but this is as true with married people as with those that are unmarried.
The assumption behind abstinence really is that women are of no value except as sexual objects. How many times have you heard stuff like "Who'll buy the cow if you give away the milk for free." How utterly insulting!
Look, sex is enjoyable, natural, healthy, and I think people should have sex regularly. If you act with respect toward your partner, it will be a great addition to your relationship.
What is it with the silly guilt trip people get on to over sex? Isn't it pointless!
Have a great time, live a full and flourishing life, and kiss passionately every day.