Ewwww ! Max mentally puked but the image of Alec and some random girl necking in bed suddenly sent her heart racing . She realized that for some reason she was not happy . The tightness in her chest did n't help either .

Generate a question about the above context.
What may be the reason why she is not happy ?
Available choices: - This other person is n't good enough for him .; - She has feelings for Max .; - They were hoping Max was n't over her yet .; - The other person is their sister .;