It depends, like is it just pictures of this girl? Or does it have some important memory tied to it?I have pictures with my exes on my phone, he's the father of my child and I have birth pictures and some other pictures of important or special events with our daughter and him. I will not be deleting them no matter what anyone says. I have however deleted pictures of just him that I took because I thought he looked cute or whatever.I have pictures with another ex because we went on a long hike in a new area and there was lots of beautiful sceneries, I dont plan on deleting them either. But again, all pictures I took because he looked good are deleted.I have no problem with anyone I date having special pictures stored away somewhere either, although I'd be a little uncomfortable if they were out in the open, like a lock screen, or in a picture frame, or someone that will be conatsnaly seen though.If it's just pictures of her, and he straight up refuses to delete them without a reason, then maybe I'd be a little concerned, but it would depend.