Hold on, isn’t your perspective self defeating? The obvious reality of this relationship is that it is experimental in nature. If they’re informed of that going in then making mistakes is the best thing they could all be doing right now at this age where there are still fail-safes. Is it weird insofar as not being a norm that op is used to? Absolutely. Is it good for all of them to get this out of their systems and/or learn what their relationship types and preferences are? Also absolutely. Teenagers are gonna fool around. It’s what they do. The easiest thing for you to do is put aside your differences and respect their autonomy so that they can make their own mistakes while you still have THEIR respect.
Hope this helps, op. Being a parent will never be easy.
Self defeating part: ‘this non-normal relationship will end in broken hearts, and normal relationships will end in broken hearts’.
you’re telling op that this relationship will fail spectacularly, then stating there is a 0.001 percent difference between this and ‘nornal’ relationships. All your comment does is inspire fear, providing no actually guidance, including by your own admission in this reply here.
Maybe that’s your aim, my original reply aimed to suggest that there are healthier ways of looking at the situation than raising alarm bells solely for the sake of alarmist comparison, and providing no other insight into the situation, again, by your own admission.