Alright Look
Before I Give You The Answer, Understand This.
NOW TO THE AWNSER
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AWNSER: Meleager was the one who changes over the course of the myth.
Explanation: At the beginning of the myth when Atalanta went back to Calydon, Meleager and the men didn't want to go out hunting with her because she was a girl (and aint wanna give them men that boom boom action - dont include this), but later in when they did go hunting, Atalanta first wounded a boar that had attacked them, and then they (The Men) killed him. Meleager gave her the boar skin as a reward, showing that he has changed his personality to think so Bigoated.
If this isn't correct, let me know.