Eros comes with time, not necessarily on the wedding day, that was my point. People didn’t have sex before marriage and no one “dated” a potential spouse. Marriages were arranged by parents. Eros came into play on the wedding night, not before. Sure certain people may have been attracted to a particular person and so urged his/her parents to arrange a marriage but again, that wasn’t the romantic notion of having a soulmate that arose in Europe in the 19th century
I agree that people back in Biblical times did not “date” in the way we “moderns” do. But, I do NOT agree that “eros came into play on the wedding night, not before”. Unless you are defining “eros” only as sexual intercourse, in that case we are misunderstanding each other, as I certainly do not see erotic love as merely “love between two people who already have had sex”.
For in the Song of Solomon, while the marriage is not consummated until the very end of chapter 4 when the bride invites her groom into her “garden”, that is NOT when the erotic imagery first begins, it begins way before. Yes, the Song is full of admonitions not to stir up love before it’s time, BUT that doesn’t seem to be the same as a couple having a completely dispassionate relationship right up to the wedding night.
I also am quite leery of the idea of “eros” (again, not intercourse, but sexual attraction itself) being relegated to marriage only. It seems quite close to the extreme courtship rules followed by the Duggars and other fundamentalist Protestants, in which couples aren’t even allowed to hold hands until engagement, and only kiss at the time of the wedding; but then, in a complete 180, the couple is supposed to go at it whenever, wherever.
I’ve even heard rumors the married Duggar daughters both consummated their marriages literally right after marriage, in the church.

Which actually IS part of traditional Jewish wedding custom, though I doubt most modern Jewish couples actually use their “private time” between wedding and reception to actually consummate the marriage.
However, I just don’t see how this is healthy, especially for women, to go from “No sexual thoughts at all” to “Sex! Sex! Sex! Sex whenever hubby wants!” Which is the Duggar approach.
But as you seem to, if not encourage, not disapprove of arranged marriages between total strangers using the “it worked for our ancestors” logic, then I guess this wouldn’t disturb you.
Marriage, yes, dating no. Looking for a soulmate is the wrong way to go about choosing a spouse. Rather, we need to choose someone who is faithful to God and would be to a potential spouse–who is compatible in nature. Couples become soulmates as they mature in marriage–indeed that it one of the primary purposes of marriage. The romantic notion that we must seek out and then marry a soulmate has been the ruin of many good marriages, so no, I don’t subscribe to it for dating couples. It’s putting the cart before the horse.
Again, I have a feeling I am misunderstanding you, but I get the feeling that you think that (1) Sexual attraction should have nothing to do with the choice of a marriage partner, but that (2) If both spouses make an effort, then they are bound to be rewarded with mutual sexual attraction eventually.
To me this seems to be just as unrealistic as the idea of Hollywood romance in which love is an external force that no one can control, much like the idea of Cupid’s arrows. Maybe it worked for you, but I don’t think it would work for me.
See, I actually know many people who come from cultures in which arranged marriage is common – from India and other parts of Asia. I’ve heard the “love comes AFTER, not BEFORE marriage” concept from such people, too.
And certainly, many such couples are very happy. But NOT all. I even know of a young woman who her parents forced to go to India for an arranged marriage as a teenager. She fled that marriage, and returned to her boyfriend in the States. Maybe you’d label this woman as a sinful adulteress who was misled by Hollywood notions of romance. But I just don’t think I can blame this woman for what she did. Indeed, AFAIK, the marriage wouldn’t even be valid under Catholic theology, because she was forced into it.