I really like this concept, and the execution from an art and how the game works in general is great. However, it's too difficult to figure out what mood will work with what attack. It honestly feels like you could come up with an argument to fit any mood that could potentially be a "winning argument."
Maybe if the system was a little more like insult sword-fighting in Monkey Island where you can see what the actual response is, so you can kind of judge it on the merits of the actual argument. It would also be super nice to have an AI that just picks random things or something just to have someone to go against.
And, of course, as was mentioned before, some of the content is a little iffy. I saw you mentioned that you intended to satirize common couples, which is fine. It's just always something that you have to be careful with when covering heavy topics (domestic/emotional abuse are beyond heavy). You can get away with playing around with topics like that, but it has to be very smartly done. Just food for thought.