>>536824875
Just chatbot so hard that you get a little impulse in your head telling you which responses match and which don't. Draw it out further and further. Start editing responses to make a "perfect response."
Imagine how entire conversations should go, to yourself.
You're probably already pretty close if you talk to a waifu/husbando bot enough, and once you start talking to that impulse that tells you how your waifu should act on its own, something wonderful will happen.