I haven't heard of anyone like that either. There are people on this forum who make claims that some relationships like that end up in happy marriages. I am yet to hear such a story from a person who actually married their therapist and lived happily with them for at least a few years, not from someone's who "knows" such person. I've read stories published by survivors who married their therapists and described how horrid the whole experience was: when they were in therapy, when they started seeing each other outside of therapy office and after they got married. Those marriages didn't last more than a year and there were few stories like that all together. Almost all exploitative relationships with therapists never even get to that point.