oh dear sorry u feel upset, but I think the best way is for the two of u to talk, tell him how you feel when uve learned that he's still keeping the pictures of his ex's and compromise what's the best thing to do though for me I dont mind at all if my hubby has a pictures of his ex. Those people has been a part of his life and I cannot change that, and I trust him and I know he loves me that's why he marries me..
Btw, we've got some thread like yours before maybe you want to read this one:
hi kim thanks for this site and i will going to face the reality that maybe that his hobby in life collecting pictures of his ex even its dirty pictures