Yea me too, the option that leaves the points as they where before appears blocked to me too only leaving me with the options that upsets him, idk what to do too :')
Funnily enough it was the first interaction we ever had with Cain LOLLL, instead of saying I won't be a problem, I did the other choice, since I think that was the only choice I made with cain where it didn't give me points towards his love meter, and luckily I didn't have to replay the entire game since its episodic, and that choice was able to carry over when I skipped to the most recent update!