Hey hopes this helps:
Never Give Up: You must ask Jeze "Wanted to talk to you" before going on the date with Hazel, or going back to your hotel. Then you must day " I'm sorry," and the photo will be unlocked after finishing the dialog with Jeze.
Jeze Prework Out: you must have denied Jeze when going out on the first date with hazel. Then later you must say "Wanted to take you up on your offer." when Jeze is opening the shop before your date with Hazel.
Hazel Vs The Evil Dead: Say your favorite Evil Dead movie is "Bloody Muscle Body Builder in Hell"; after some dialog you will unlock the picture.
As for the J&H share a treat I'm still working that one out
Hope this helps <3