Repetition

I am currently having the it write a novel like interactive story with me.  Something to pass the time and also to write out my story ideas for me, specifically the more “explicit” and “sexual” stuff is what im having issues with. No matter what I try to say or tell it, it keeps repeating the same dialogs and scenes. On top of that it only happens at the end, the first half is always what I requested then it'd immediately switchs back to the scenes it just did.