Yep, that's how this thread tends to go.
At least in my playthrough, it feels like they've made progress on being comfortable with their triad. But that's definitely subjective, so won't get into it more deeply again.
I did want to mention that the game does a pretty good job depicting two common challenges for polyamorous relationships.
First, while growing up, most people see or read about lots of examples of what healthy monogamous relationships look like either in person or in shows, movies, and books, but there's very few public examples of healthy polyamory, despite it being more common than most people think (about 1 in 9 people in the US have tried it at some point, and 1 in 20 currently are in a polyamorous relationship). Because of this, people trying polyamory for the first time often have a bit more they need to figure out on their own in terms of being comfortable and making the relationship work.
Second, the biggest challenge people in a poly relationship typically face isn't from the relationship itself, but dealing with social stigma and legal disadvantage. A significant majority of people view any non-monogamous relationship as inferior or immoral, so most poly groups keep it secret. Having to do that and deal with legal issues can take a toll on the relationship, so it's reasonably authentic to see how that secrecy and, now that they're partially out, the social judgement affects them.
Anyways, enough rambling. We won't really know what's in store for the throuple until updates come.