Husband saving Hoe pictures..

I know I will get a lot of negativity for this, Idc I just need advice.

My husband has a thing about saving pictures of naked girls on his phone. He started doing this when I was pregnant to my second. His not all about girls In real. He just seriously saves them on his phone for some reason. I’ve told him how hurtful It is and really annoys me. I end up deleting the pictures and he will just go save more after. I’m really losing my mind. pregnancy hasn’t fucked up my body, Im still as I was before, Our sex life is good also. I really don’t know what to think.. Advice anyone?