what should i do guys?

so i recently caught my boyfriend liking inappropriate pictures ex: girls in underwear twerking and boob imprints and just stuff like that. i’m really hurt because he made a tiktok account and hid it for almost a year and i asked him a lot because i had a gut feeling for a while now.. and i log in because i found the username and we usually keep the same passwords.. and i sent him ss of everything and he denied 2 times and then came clear of it.. what should i do??