NOTE: This question was addressed to KIdd, I am answering it on the basis that Sniper directed me here and requested insight. In reading the thread, I am surprised that he passed on the question given his incredible intuitive ability.
Long live The Kidd.
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All right.
From the male perspective, it is more straight forward than it appears.
What happened to the men in question was that, before converting, they were looking for happiness in their women. This increased their own expectations on the women they were dating, expectations which could not (and will never!) be met no matter how strongly one believes in them. Basically put; their relationships were being relied upon based the bond with their women.
The new relationships, after conversion, do not have this problem. Why? Because they are no longer relying on something external to validate their sense of self. They have found something far more specific. A lifestyle to live by. A virtue to follow. A way in which they wholeheartedly believe and wish to lead their lives. In this case, their religion; Christianity. They have believed in and absorbed this religion to such an extent that they are up to speed with the joy and purpose that they feel in their lives without using the women to give them meaning. This of course, is an attractive quality. As long as they maintain their strong beliefs, their relationships and future relationships will have no trouble. I must stress though, that If at any time these men switch their sense of joy from their religion to their women, they will go from being energy providers to energy suckers and subsequently the woman will make their lives a living hell. No pun intended.
I am truly not aware of any religion which is capable of doing such a thing on a long term basis. There was of course, the professional wrestler, Shawn Michaels, but he converted well after his thirties and would be more naturally grounded by now. People still close to Michaels still state that there is a bit of the old 'him' that surfaces briefly from time to time, before being locked away again. Sniper, are these men in that age group?
If you wish Sniper, I can give you the female perspective, but truly, it is not relevent.