HELP don't know what to do

Okay a bit long please bear with I love my other half and he treats me like a princess but this one thing is the only issue I have.

There's About 100 different pictures and videos on his laptop of women not every picture is a different person, ranged from fully clothed "going out" to completely naked he's got them within the last couple of months and no I didn't snoop some of them used be his lock screen flick through he knows it bothers me because when I first found out I asked then after pointedly closing the laptop every time it locks he took them off the background all the pics and videos are in 3 different folders labelled as "work" or "work related" I don't care if he watches porn or even has naked photos of celebrities it's the fact there's that many and he uses a website to talk to people and gets them he said he doesn't know if it's the actual person or not because he pretends he's female sometimes , the fact that he's even "possibly" talking to the people in these photos when I'm not here or I'm asleep is enough to bother me. When he's on the game he uses and I wake up he shuts down the game within a minute of me seeing it nothing else just that. He knows I'm paranoid and insecure and I don't want to bring it up and him say it's my issue and deal with it because we're meant to be living together by the end of the year.

Just wanted everyone else's thoughts thank you