A lot of the game is done very well. Will be watching updates.
Suggestions:
The shootting is a bit jarring both in terms of writing and game play. My suggestion, create a new path. If claire and MC have been receptive to ntr, the MC will get angry at the party and go into his bed room, show some of his thoughts of jealousy, but then he passes out drunk instead of returning. This allows Daryl and Claire to continue down a cheating path. This would be high lust + cheating route.
For the shooting path (blackmail) Claire should be triggering the ntr scenes but given the option to back out at the last moment without doing anything. Then the MC can see Daryl every time afterwards so he knows he is making moves on his wife and get jealous. So on this route he goes to the bedroom, you see some of his thoughts, he pulls open the nightstand to reveal the gun. Cut back to party, some more dialogue, MC shows up with gun, etc. This would be moderate or high lust but no cheating when given the opportunity in the shower/bar.
For the love path it seems people are upset that you didn't include a harem path. I agree with your point about not being able to have it all in real life, but I would recommend you just give people what they want because you will get more donations that way. The images are good so it should attract people to play it. On the other hand trying to juggle too many well developed routes will surely take it's toll on development.