Um, sorry, but what you describe is really smelly and is even concern for possible depression.
Self care is one of the first things that goes when s/o looses interest in their surroundings and self.
My questions:
Does he work outside the home? IF so, does he go to work like that?
What climate do you live in? NV can be very hot, but dry....so doesn't he smell?
Where did he learn these habits?
Is he aware that you are bothered?
It's just the pits when these behaviors happen AFTER marriage, b/c the odds of your ability to effectively make a difference for the better decrease. It's also one thing if you're out camping and roughing it, or it's a vacation and you're just totally relaxed. But what you describe is clearly diff.
Have you had a serious heart to heart chat with him, a serious I need your complete attention about this issue NOW and let him know that for many reasons you would so appreciate a more consistent effort on his grooming.
FYI, with close to 20 years of marriage for us, my husband showers daily, clean underwear daily, I like it when he does not shave on the weekends - it feels great having his stubble rubbed on my body. But there is no way I would make love to an unkempt man.
Another mama here asked a bathing question about her friends kids being filthy all the time. I'll try to find and send you the link. Otherwise you can look it up, but I don't think the title tells all.
Here's the other bathing link:
http://www.mamapedia.com/questions/17404380212703133697
It's a very different set of circumstances...but the answers are great!