I wonder when will we see what the fmc actually feels? She clearly wants to be treated as a dirt rag by the mc. To be cheated on, have him be agressive towards her, sexually used etc. When she found out he was going behing her back it looks more like she is happy and aroused rather than relieved. We can also see how she likes to service other men than her bf, most likely to anger him? Just like someone mentioned, nothing makes sense in this manga. She speaks how she likes his kind side but actively wants to hurt him. Basically, a manga for swingers but honestly even they wouldn't be satisfied since the fmc is weird so its more towards cucks since the anguish of the mc is so detailed