I guess the fact is.. as a LBS , we will never factually know the truth regarding this question. But I can express what I saw ( in my husband) and my perception. I honestly believed that my husband had a "brain tumour", or a stroke or a reaction to several new medications he had just started . Some of what he said and did was so staggering and catastrophic ..that he simply had to have a medical condition or most certainly a mental breakdown. I do not believe he could control his behaviour . I saw raw desperation, utter confusion, rage , blankness as if he was in "shock" of some kind. He continually wore a deep scowl ( never saw that before), was red faced , puffy looking and his eyes were flat... no one was behind them. He bit his lip chronically .. never did that before and has not done that since.
He is here beside me on the couch.. so I asked him. He has a sensitivity to being asked about a time period that he "lost himself", but he does his best to answer. I says that "everyone is likely different" but for him, he believes there was a period of time that he absolutely could never have controlled his "thinking" and consequently his behavior. He says he absolutely remembers the feeling of being void of caring. He did not CARE ABOUT ANYTHING .. NOTHING MATTERRED . He says that in the state of mind that he "went to" he was not thinking about his behaviour , he was just trying to survive... one foot in front of the other. He could not make ONE SINGLE DECISION about anything in his life, at his job etc. His particular "trigger" or perception was that I no longer loved him, wanted him etc.. and this devastated him and started a journey of out of control reactions to everything in his life. He remembers very little. His therapist validates that his reactions were from a deep wound of rejection by his mother ( and a perceived rejection by me) and he internally collapsed in many way. Therapist has talked to him about his affair partner somehow was a "re-enactment " of mother abandonement issues deep in self conscious . All very complex. He says he was completely out of control and that added to is rage and fear. Still hard to process or remember .