I'm not a big fan of the unresolved family of origin thing. Especially not for a rekindled romance. It has more to do with wanting to recapture the feelings of that time, feeling young again, get together to lead the life they think they should had lead if they were together in the first place. But she says that "these are two people who loved each other years ago and missed an opportunity to be together; now they want to correct that mistake."
In fact, it is not at odds with what we say here. The articles clearly state that what the MLCer feels at any given time is real for the MLCer at that given time. It may not be later, but in the moment, it is real because they feel it.
Infatuation may be just infatuation, but it is still real when we feel it. Same for desire/lust. What we may is not act upon it, but they are real.
However, of course it is also a fantasy. The whole situation being a fantasy does not mean that what is felt in the moment is not real. But how long is that feeling of start stuck lovers/we were always made to be together is going to last? People may stay in that relationship, but their feelings and the way they see the relationship will change over time.
I do think there is a difference between getting together with our MLCer, and a late adolescence love. And, for many, the MLCer is not an ex-spouse, it is still the spouse. Albeit often, only legally.
Of course leaving your marriage for a lost love has very little changes of working out. 5% even seems too much to me.
Widowed I could see it work fine. Divorced, I think it would depend.
On that other link you posted, the one with the board post, it is so obvious what an affair down the lost love is. Depressed, drinker, cheated on his wife, no job, contacted her on a drinking binge, etc. What a catch. I could not wait to go back to such lost love.
Of course the wife who got involved with her lost love in a MLCer, who is depressed and doing all the things MLCers do.
Well, my first serious boyfriend can turn up on the door, I'm not going to be interested. A couple of years ago he invited me, as well as many other people, to his 50th birthday. It was not odd because we move in the same small cultural circle and the party was public, but I could not be bothered.
Sometimes good things fall apart so better things can fall together. (Marilyn Monroe)