Yes, it does, but it doesn't speak to the value or worth of the person who was promiscuous. This is why I was attempting to tease open the question of motivation.
"Needs" might be a strong term. I'd suggest that that kind of insecurity is likely to come out in some way, regardless of the past of her husband, and that it would probably benefit her to address it.
Maybe... but I'd say that kind of insecurity is usually pretty deep-seated and not really about the other person at all.
Now; that doesn't oblige her to marry a man with a promiscuous past! Nobody is so obliged. But it's a question of what motivates our choices.