
I think it’s more important that you get adequate relationship experience, not the amount of people necessarily. Going through a couple relationships gives you a clear idea of traits and qualities you want to look for and avoid. I believe it’s necessary to have a couple failed relationships at least before you find the real soulmate, obviously there’s some exceptions though.
I don’t think they’re saying to sleep around. I think they’re saying you have don’t have enough experience to know if this is a great relationship or if there are better ones. They’re saying it’s an uninformed choice, and they’re worried that it’s happening out of inertia or fear. They’re might be wrong, but I think that me their fear.