Most Helpful Girl
Is it half naked or naked girls?
I definitely would not be okay with this regardless.
The only time I wouldn't care is if he had like one celeb crush or something and its a funny thing to do but I've only seen one guy do that and it wasn't a sexual picture in any way.
Most Helpful Guy
First off he is disrespectful to you about it. Also of you've told him and he still does it, he's basically saying he does not care how you feel and you need to drop him.