"In many ways, the experiences we heard about sound like a modern update to an age-old dynamic: a significant other falling under the influence of a questionable new friend, social group, or other interloper who drives a wedge between partners in a previously secure relationship."

This happened to me over 20 years ago (the traditional dynamic, of course). Even the traditional dynamic can occur fast, and can be devastating. Destroyed a five year relationship only a few months before our wedding in a matter of 2 months, with no obvious warnings on my end.

I can only imagine how insane adding LLMs to this will be.