There is one type of BBS/NTR where both childhood friends love each other, but are to shy/scared to change things - then a huge dick/experienced pussy comes and claims one side, sometimes often exactly after the moment where one side was pushed for answers and out of who know what reasons shouted that they never had and never will feelings for the other side, which they instantly regret but it still hurts the other side pushing them for that huge dick/other pussy.
Thats the BBS/NTR I hate with a passion.
But then there is BBS/NTR where one of the childhood friends in pure asshole, they like the other side, but behave in such a way that only hatred/indifference rises in that other side. Thats where the BBS/NTR is just a teaching lesson - its required, needed, recommended, and it makes you happy when you witness it