Also, i think i know why Nick wife put that playlist in private.. she had a video with that "TED" talk author... and if you look for that author, Esther Perel, she is being called out for being a "cheating apologist".
And just digging in the first page of Google results with "Esther Perel cheating apologist", i just found this;
https://archive.is/qw6vg (original;
https://www.newyorker.com/magazine/2017/12/18/in-defense-of-adulterers)
Just fast scrolling down, i found something, let's say... curious about this author;
Cuote; Perel claims, not only to save your relationship but to transform “the experience of infidelity into an enlarging emotional journey.” Roused from sexual complacency by the threat of a third party, you may find that the sexual spark in your marriage has been reignited. “There is nothing like the eroticized gaze of the third to challenge our domesticated perceptions of each other,” she writes. Now “the ongoing challenge” for you and your partner is to maintain the flame. Tips for doing so include arranging candlelit date nights at home and creating secret e-mail accounts for “private, X-rated conversations during meetings, playdates, and parent-teacher conferences.
(Wtf)
More; Perel is not unsympathetic to this thought, and, toward the end of her book, she devotes a brief chapter to various forms of consensual non-monogamy. She writes about couples who swing, couples who have chosen to be, in the term coined by the sex columnist Dan Savage, “monogamish,” and couples who have expanded into “triads,” “quads,” or “polyamorous pods.”... Perel praises the efforts of all these non-monogamists “to tackle the core existential paradoxes that every couple wrestles with—security and adventure, togetherness and autonomy, stability and novelty,” and she is careful to remind the squeamish that many of these “romantic pluralists” succeed in maintaining rather higher standards of loyalty and honesty than do their monogamous counterparts.
And the entire thing appears to be on line with all this "fun" shit talk that Nick let out of his mouth every day. (And is always this weird and ambiguous language used, that i was talking before).
It's looking bad for Nick... why your wife would be seeing this kind of content with this kind author?... and again, it's all this "sex, sex, sex" shit going on.