In modern relationships, many people believe that it is important to test or prioritize sexual compatibility before marriage, and this means having sex with one’s current partner to see whether they will both be able to enjoy sex in marriage.

While this belief or practice may seem like a sensible approach to ensuring a harmonious marriage, it often times poses some dangers to one or both partners in the long run and this practice – that of testing sexual compatibility – could jeopardize the very foundation of a relationship.

Here are reasons why it is unsafe or even dangerous to prioritize or focus on sexual compatibility before marriage.

Firstly, in the long run, sex is not all that matters in a relationship or marriage. One significant danger in focusing solely on sexual compatibility is the risk of prioritizing physical attraction over emotional connection

https://newsroundtheclock.com/why-it-is-dangerous-to-test-sexual-compatibility-before-marriage/

I don't believe in that rubbish called sexual compatibility.Self control and self discipline or their lack is one of the determinant factors in courtship and marriage, alongside the willingness to deal with disorders affecting sex drive and maintain a healthy sex life.
A virgin can be taught how to be romantic in bed,if she doesn't know how due to her family background, because that is one big fat reason why some girls are almost unresponsive on bed.
In some overreligious families,girls are indoctrinated into the notion that expressing sexual gestures and all that in bed is a sin, and another is a horrible sexual abuse history which has so much traumatized them that they become almost frigid during lovemaking.