Practicality

First, there is a practical reason for waiting. Premarital sex can detract from a strong relationship and a dynamic sex life. All too often, premarital sex ends up a self-seeking, self-gratifying experience. After intercourse, one partner might be saying “I love you” while the other is thinking “I love it.”Very often premarital sex occurs in the absence of total and permanent commitment. This can bring insecurity into the relationship. Both short–and long–range problems can result, especially with the breakdown in trust. For instance, while the couple is unmarried, there can always be the nagging thought, “If s/he’s done it with me, whom else have they slept with?” After they marry, one might think, “If that person was willing to break a standard with me before we married, how do I know they won’t now that we are married?” Doubt and suspicion can chip away at their relationship. Poor communication, poor sex.
Premarital sex can also inhibit communication. Each might wonder, “How do I compare with my lover’s other partners? Does s/he tell them how I perform in bed?” Or perhaps they think, “Should I be totally honest and vulnerable and share my heart with this person when I don’t know if they’ll be around tomorrow? Can I entrust all of me to them if I don’t have all of them for me? There will be part of me emotionally that I’ll hold back.” Each becomes less open; communication dwindles. And poor communication makes for poor sex. Bad feelings result, communication deteriorates and so does the relationship. In short, premarital sex can put people at a disadvantage because it can lessen their chances to experience maximum oneness and pleasure.
One young woman at Arizona State University expressed it like this: “I understand what you’re saying about unity or oneness. I’ve had several premarital sexual experiences with different men. After each one, I’ve felt like I’ve left a part of myself with that person emotionally. What you’re saying is that it makes sense for a person to save themselves so they can give themselves completely to their spouse.”