Loup

First sign of trouble is when you're tired of fighting - from legit healthy (hey, everyone fights) fighting to the most minute stupid insufficient detail. But more important in your case is the lack of respect that he has shown regarding his actions towards your pictures. My thoughts: Get the pictures back and walk away from the fool for good.

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"If you cannot lift the load off another's back, do not walk away. Try to lighten it."
~ Frank Tyger