This is based on opinion. Please don't list it on a work's trope example list.
Tear Jerker / Black Box TV
Adrian's betrayal by his secret boyfriend in Zombie. When the two of them are caught embracing by the boyfriend's friend, the boyfriend immediately turns on Adrian and accuses Adrian of coming on to him. Adrian, on the verge of tears, repeats 'What are you talking about?' while his boyfriend gets angrier and angrier. He then punches Adrian in the face and knocks him to the ground, and Adrian cracks his skull on a rock and dies. Adrian in voiceover, says simply, 'You did this to me.' We then see him in his zombie state, pounding the ground and roaring in anguish.