Courtship, on the other hand, absolutely does have marriage in mind.
To say that you are courting someone or are in a courtship is basically to say “I am moving toward potential marriage with this person, and we shall see how it goes.” It also absolutely implies exclusivity with the person.
This particularly pertains to women, since men are the purchasers (the ones who propose).
Because it means exclusivity, courtship needs to be a short period of time, and have a definitive end. Otherwise, you risk hurting each other in a way you do not wish to, but can simply because you are not yet married.
It risks looking like and acting like you are married, when you have not formally made the commitment.
However, among Christians, you still hear “courtship” and “dating” used interchangeably; indicating that many single people find the terms to mean the same thing.
Why would anyone use the term “courtship” when they are simply “dating”? Some Christians find the word “dating” to be a negative term due to their secular counterparts using the term excessively.
I think a single Christian person using “courtship” to describe their dating life wants to psychologically believe they are doing something a little better, a bit more nobler than merely “dating”.