I think, he is very stressful and worried alot. So he keep looking at many sexy women and naked, he would feel good by himself. His wife is probably busy with pregnany stuffs. Believe me, after baby born, he will not stop it to continue sexy pictures and maybe affairs with someone.
Haha! Not to go off topic, but every single guy who gets married wonders "Will I still think women, other women besides my wife, are hot?" There's no magic "off" button. That's the challenge of marriage, to remain faithful in thought, word, and deed, despite
all the temptations out there.
Again, many happy congratulations for the wonderful years ahead. Suggestion - kids grow up freaky fast. Don't fall into the temptation to buy a lot of really expensive baby furniture, like fancy cribs and changing tables. It's a scam. New parents especially fall into the trap. In 18 months, most of it will be useless. Just look for simple, sturdy stuff.
Oh yes, don't get one of those Mercedes-like baby strollers. Another gigantic waste of money. Get one of these:
I can always tell the experienced parents when they travel on an airplane. They have a simple umbrella stroller, and travel light. Over-worried new parents have a ridiculous stroller that takes 10 minutes to set up, and enough gear to equip an army!