2 Samuel 13:15

Then Amnon hated her exceedingly; so that the hatred wherewith he hated her was greater than the love wherewith he had loved her. And Amnon said unto her, Arise, be gone.

Cross-reference

In 2 Samuel 13:1, Amnon 'loved' Tamar — this hate contrasts sharply, revealing his love was mere lust that turned to disgust.

2 Samuel 13:36 shows the grief at Amnon's death — his hate in v.15 set the chain of revenge in motion, leading to this tragedy.