The game for me hovers between okay and slightly above average when it has the potential to become excellent. Like the other comments, I agree that it should not be unavoidable for the MC to cheat. I believe the "loving route" is the loving route because the MC actually loves the fmc. Hence, it makes no sense for the MC to cheat on her so willingly and easily or make it unavoidable. Which also brings me to another question, why do you have to choose whether to go on the corruption route or loving route at the start of the game? I've played through both routes and there's no difference between which option you choose in the beginning. Furthermore, if you choose one of the routes at the start, shouldn't the choices be different or at least restrict some options? Otherwise, what's the point of having to choose which route you want to play. It really serves no function since your choices in the game are the ones that determine which route you are heading for, not the choice at the beginning.
Another small issue I have is that it seems a bit too easy for the FMC to start lusting after Carl when your on the "loving route." If it was the corruption route, I'd understand cuz the boyfriend is being a bitch but in the loving route, the FMC is supposed to "love" the MC. Her suddenly lusting after Carl's dick and having dreams where she's getting fucked by Carl when she's supposedly in love doesn't make much sense and ruins the immersion. She even says she had a good dream after she wakes up. This is a porn game so I understand it can't be 100 percent realistic but it doesn't have to be illogical as well since it ruins your immersion when playing the game. Despite the already farfetched dream that appeared too early in the ntr process, they could at least change her thoughts and make it so she feels guilty for having the dream but also not entirely opposed to it. From what the dev has done so far, I can't really tell the difference between the love route and corruption route.
The love route should be where the FMC loves the MC but slowly becomes corrupted because of Lily, Carl's charisma and dominance, and the appeal of becoming successful by listening to Carl (on the condition that the ntr is indeed unavoidable). Of course, the Dev can use blackmail and coercion to speed up the love route but if not, it should be a slower but more satisfying burn than corruption. The moral degradation would be even more magnified because the MC is a loving boyfriend who full heartedly supports his girlfriend. There would be greater inner conflict and turmoil as she cheats on her boyfriend while knowing what she's doing is wrong. She'd feel guilty but can't help herself from indulging in pleasure and her own desires. This would really hit the ntr aspect and set this game apart from the other mindless ntr games out there.
The corruption route compliments the loving route because it's fast-paced and the MC himself has the potential to become either a betacuck or a dominant boyfriend (based on your preferences). It would be interesting to see that if you choose to make the mc dominant, you get the option later in the story to dominate his cheating girlfriend and enjoy the fruits of her corruption while also enjoying the other girls he dominated. Making a fully corrupted Ria solely yours would be super hot and amazing and seeing a fully submissive Lily would be like 1000 cherries on top. It would truly be a breath of fresh air if the mc takes the girl back since there's so many ntr games where if you choose to make the MC slightly more dominant and actually get pussy, you always default into the swinger/open relationship route. That or the MC becomes a cuckold who enjoys seeing his partner get fucked when you make him submissive.
All in all, I think the game has potential to become more than what it currently is (a standard, run-of-the-mill ntr game). This is especially so when you can make the MC dominant in a game where ntr is unavoidable. The renders are pretty good and the character models are hot and sexy enough. It would make the game much better if the dev could differentiate between the two routes and add a bit more realism and thought into the loving route. I personally believe the loving route is an opportunity for the dev to add character and personality to the fmc because currently, she feels no different from any other fmc in a ntr game. Especially so when she acts mostly the same in both the loving and corruption route.
Of course, these are all my personal thoughts and opinions based on the current version of the game. I would love to see what the Dev thinks and what plans he has for future content.