Second, the game is about (MC) not his girlfriend or any other character, and just like in real life you can control your actions not the actions of others, whatever that means.
Now, the not serious stuff you mentioned.
1) Sexual assault in medieval-ish times, I wouldn't consider a girl kissing you that, but I understand your point. Do you have the choice to not kiss her yourself though?
2) It's a dream.
3) It's a dream. (I think it's the scene you point out)
4) It's a dream.
5) I need to check this one because I'm not sure what do you mean.
6) (MC) is surprised by it, he is not quite sure of what happens or why she kisses him, but we can imagine that it was because it could be their last day alive.
7) "Maybe next time" is a even more polite way to say "No thanks".
Very serious:
1) It's not MC fault, if you are raped in real life, is it your fault? Can you choose not to be raped? If your GF/Wife is raped is it NTR? Will you dump her because she cheated on you with the rapist(s)?
2) True, but if you are drugged and abused or something similiar you can't be responsible for your actions right?
3) It's a dream.
Just like in real world you can't control everything about it, or any of it if we think about it.
MC is a horndog fuck boy: I'm not even sure of what that means, but I can tell you that when I was his age in real life (and almost every other guy I knew) a hot girl could cause unwanted and involuntary body reactions on my part
About Mida, she has her own personality she is not yours to control, same for any character (Unless you can mind control them but that's a total different point) she grows older and more experienced in life, like it would be in real life, she's naturally a lesbian but for "reasons" MC is different to her.
Thank you for your words and for playing the game, I do enjoy criticism when it's due, and I respect opinions. Trust me, I'm one of those people that believes anyone should be able to say whatever they want as long as it's not a direct threat to others, as everyone should be ready to hear whatever anyone else has to say. That would solve a lot of the world issues.
You have to download Act I and play until the end. Then you have to download Act II and continue to play the game. (You can even delete Act I after this if you want) I'm not sure what's nonsensical about it