Hi Lal..
I have a stumbling thought.
Is making out (oral sex) with a future wife Or fiancé a kamacchanda?
It has always been a polemic about this immoral act, in my opinion personally this immoral act is more like going to prostitution, rape, fetishism, because you want to fulfill uncontrollable desires (kamacchanda), but if you mention being related to your future wife or fiancé (not to the point of having sex) just like kissing and so on. is the category of kamacchanda Or kamaraga , I doubt it here. Because in this case it does not harm other beings, but the desire of the body that wants to be fulfilled.
Sorry to ask this before, This stuck in my mind. I think you are competent to answer.🙏
With metta, waisaka