That was a good example, but I haven't played it in ages, waiting for him to finish all the rework...
Athena and Heidi in Bare Witness could be good too, though I haven't explored it yet
I'm waiting for it to be completed to replay, but there's a fundamental difference, they are already in a relationship, MC is being added. While good, it's not really the type of story I prefer.
But, I feel like BTT is writing what can become the standard for dramaless throuples.
For a while I thought that the writer of Triangle, Knight's Story and Couples, could be, but I think that there's something that really doesn't work for me in his games. The need to "separate" couplings. They are all in ONE relationship, or are they in separated relationships that may or may not fuse? I find that absolutely discouraging and sometimes right down the dreaded 3 letters path in terms of feelings. FFCreations, in Freeloading Family, did the same forcing the MC out of all of Alice's interactions with girls. It was heartbreaking.
But, BTT has the chance of creating a truly defining trend here. If the correct approach is taken, embracing the closeness and involvement of all three, so that instead of having 3 relationships, we truly end up with ONE that has 3 participants, all equal, all in, all at the same time.
That I have played, this hasn't been done. Somehow there's always a couple and a add-on. To me that is a poor man's throuple, while the true thing is a relationship. ONE relationship. The type of thing where it doesn't matter which one is in the middle. I have high hopes that this one is it. Very high hopes.
Peace
P.S.: The other games are mentioned for reference, not comparison. They are all part of my Top 20 and I love all of them dearly. No intention of disparaging or diminishing them.