In the Freudian sense, it would be both of them who were pursuing a course of action fraught with risk - including life-ending risk. So, my love of travel means that I leave the house and sometimes go on an airplane (and I actually quite enjoy it - which is Freud's point; people everywhere have some form of risk-taking behavior that they seek and enjoy - that's who we are as humans). To put it the way a more modern psychologist said it (George Spindler), "All primates are attracted to risk, sex, play and competition...humans are no exception.") He went on to say that if we lack too much in the way of risk and scary adventure, we will create some culture to accomplish the scary feelings for us. So every culture, over time, has always had scary rituals or whatnot.
Barry took the risk of controlling his wife (including the risk that she would fall out of love and leave him), etc. Then he found even more risk-taking to be a solution to his inner turmoil. She did similar things. Most of us have done something risky at one time or another - even if it was just an actual roller coaster.
I agree that people who announce the kind of thing that Barry did ("I am going to kill myself if I can't control you,") are histrionic at best, and likely have many selfish (narcissistic) traits. Selfishness, by itself, is a real thing and is often accompanied by being a cheapskate. I thought it was interesting that Barry said, "If you arrest me, how am I going to raise my daughter?" rather than using the word "daughters." He sees an ending point to his "raising/parenting" (whereas many parents understand that there is really never an end to parenting...it changes, but it's still there).
R
(For some of us, it's scary enough just to read true crime - and risk learning some awful facts about humans).