@Ipex Yeah, but she explicitly said that she already knows everything about Ai's thoughts and behaviours. She's basing her acting on informations she already has. The logical and quickest way to get those data is just asking her because she has no reason to not tell him.
Also, if they get in a...
I don't see why he had to get in a relationship with her just to get informations. He could have just become friends with her and not cut ties after the show ended.