Relationship Problems Going Down Hill

Me and my boyfriend have been through so much together, I just can't explain everything. Tonight I said "I'm done" with him because he still has photos of his child's mother on his iPad and I just completely snapped. I do not want him having any picture or videos of her no where period. I get so upset and he said I'm all complaining about this bs every other day and I just want him to stop lying to me and be honest but I honestly don't know what to do. ?