Ex's pictures 😡

Ok so my bf and we've been together for 8 months or so, recently we started lo live together so one day I was checking something on his iPad and I have to admit it. I went trough the whole think I found nothing till I got to the pictures and he has pictures of his ex WTF?! I'm pregnant with his baby and he says that he loves me bla
Bla bla... so few days ago he said that he had to delete some pics and stuff to make more space and he did today y check again and he deleted some of our pictures but not hers... He has to be kidding me... so I was really upset and I deleted some of hers... What should I do? Confront him?