This is always the danger in this kinda situation. The step to NTR from NTS is not as big as most would think. From a certain point of view, Laura was already breaking the rules anyway. The random texts you get from her or Nathan cause they are having a sex session. Or even in the latest version where she has sat on a pic for later teasing purposes (you could argue no rules are broken cause she does eventually tell you) but still, telling you after the fact or during the event is borderline. Anyway I digress.This is NTS, so I don't think we will ever go there. It'd be weird cause a lot of people don't want that either.
Now they have the group chat and are slowly corrupting Tara, Laura will have a few stories we need to here for the first time in order to combat repetativeness. I think breaking of the rules is a set up to combat this in a "oh I didn't know about that meeting with Nathan" and "you told me I could break the rules to tease you a little" way.