I have to wonder what was so wrong in the marriage that she had to go somewhere else.
I have to wonder what was so wrong in the marriage that HE had to go somewhere else? That works BOTH ways. I personally knew a couple in my younger JW days where the oh so spiritual wife would use the silent treatment and ask the witness husband how long he could go without in each and every case where he wished to do something or go somewhere she did not approve of (camping, hunting, fishing etc).
And lumping men into the "they marry only for sex" pigeon hole is IMO an incorrect female excuse for their actions. Men desire closeness and emotional support from their partner pretty much at the same level as a woman.