Of course the Bible says that sex outside of marriage is a sin.
But we know that sex is a major issue that can make or break a marriage. It is important for people to know what their partners like and don’t like in sex, and how much libido their partners have. We know that a marriage that is not open to life is also a sin, in Catholicism. We know that lack of sex, or bad sex, can ruin relationships and destroy marriages.
So practically speaking, despite what the Bible says, don’t people need to “test drive the car before they buy it,” in other words, have sex before marriage to test each other’s sexual compatibility? Isn’t it a foolish risk to not “test drive a car before buying it?” Wouldn’t it be a possible setup for failure to not have sex before marriage?
Let’s discuss.
This idea is premised upon a perspective that is clearly unChristian and unethical.
UnChristian because unconditional love for others, especially “significant” others like a spouse, children or “neighbors” including enemies means we don’t “discard” anyone after “trying them out.”
Unethical because an important ethical principle is that human beings should be considered ends in themselves and never used merely as means.
To go into a marriage with the expectation that the person being considered for marriage will succeed or fail as one worthy of being loved as a “mate” based upon their sexual performance is a profoundly immoral perspective to begin with. It simply misses the point of “who” others are - treating them as objects in the world rather than as persons (which is why the analogy to a car seems superficially plausible) - and why humans exist to begin with (to live a pleasurable existence.)
If lack of sexual performance/compatibility can, in principle, be a reason not to marry someone, it can, in principle, be a reason to divorce someone after the fact. Such a position advocates, contrary to Jesus’ teaching, that man can (and should) “put asunder” what God has joined together.
The other problem with this perspective is that it completely ignores all the positive reasons why one person should marry another; reasons which, in the end, will be what keeps the couple together.
It is maturity, understanding and depth of personal empathy/intimacy/compassion - and, more importantly, depth of love - that are far more crucial than a physical act (which assumes a superficial view of persons to begin with) that will ensure a lasting marriage.