I think that men in ancient times and not-so-ancient times who openly had many wives
could indeed love more than one of them very dearly.
I think that men (and women- but I will stick to the one side for typical situations) who
cheat on their wives can and do sometimes love the wife and the other(s).
I think that open marriages or strange bonds of threesomes create bonds beyond friendship
without necessarily ending the marriage bond.
HOWEVER, cheating on your wife is unfair to her. I don't judge those stuck in loveless or
sexless marriages. I refer to those that sneak behind the wife's back without seeking
counsel or talking about their marriage with their wife.
ALSO, marriages that allowed many wives were commonly found in places and times where
women were considered less than men. We know better nowadays that women are equals
and my opinion is that a man only deserves one equal partner, not more than one lesser
servant/plaything.
The open marriage and strange bonds I referred to, that's not my bag, but if that's really
what all parties in a relationship want, more power to them.
Personally, one wife is plenty for me. And before I would seek another mate (in the most
hypothetic of circumstances) I would have to try to work out this relationship or end it
before such a seeking occurs.