What does this dream mean?

Well i had a dream about my ex and we were in school ( we are going to be seniors this year so it was our senior year) and usually our lockers would be next to each other but in the dream i had the same locker i had last year and he had a different one on a different hall...and then i guess i was on the computer and i was looking at pictures of him and his girlfriend...i don't know what that means because he doesn't have any pictures with her.......i've been having dreams about him for weeks but i only remember bits and pieces....except for this one....but we always end up looking at each other in my dreams (when were in school we weren't really talking so we would look at each other but never say anything to each other) and in one dream we were in homeroom and he sat down in front of me and turned around and said hey to me and asked me how i was doing......what do you think that means especially the picture part