Then the Philistines said, Who has done this? They said, Samson, the son-in-law of the Timnite, because he has taken his wife, and given her to his companion. The Philistines came up, and burnt her and her father with fire.
The fate that Samson’s "wife" sought to avoid by betraying him overtook her after all (cf. Judges 14:15). The Philistines presumably burned the house down with the woman and her parents inside (Judges 15:6). The Philistines’ act of revenge on his "wife" simply added more fuel to the desire for revenge that was already burning within Samson (Judges 15:7). Evidently he loved the Timnite woman. He proceeded to avenge her death by killing many more of the Philistines (Judges 15:8). Then he took refuge in a cave nearby.