To clarify the points I was making that you missed or didn't read before your comment:
1: I had posted the first comment before playing and under initial impression that the gf was the futa.
2: I only offer a suggestion of diversifying the content because diverse content games tend to thrive better than niche games, and I actually hope for games like this to succeed.
3: I offered a point of constructive criticism on the state of the mc's relationship or really lack thereof.
A common failure of any ntr game is to complete ignore the relationship that's being betrayed, which really makes it less dramatic and more annoying. This is usually comes off has the relationship having both members being closer to each other when they were friends than they are has lovers, which undermines the entire premise.
Summarized I understand the spirit and good intent of your message, that said my points are no less valid and just has well intended.