Picture of ex on instagram

I've been talking to this guy for a while. I don't follow him on any social media accounts. Because I'm nosey, I found his social media accounts, and kind of found somethings that were a little unsettling. His Instagram was unlocked and I saw that he still had pictures of his ex on there. I know i shouldnt have went looking and this is my fault. But I dont know if I should stop talking to him and move on or ignore it and move on past this situation.