I'm going to leave my girlfriend at the club even though she's crying.
Are you kidding? Why would you want to leave your girlfriend at the club while she's crying?
She was flirting with another man and I don't like that behavior.
I know you're upset with your girlfriend, but you should not leave her at the club. You should tell her how you feel and explain that you don't like her flirting with another man when the two of you are together. It's wrong to abandon her in a place you took her to.
She's always flirting with another man, she doesn't deserve my respect.
I understand why you're annoyed, but you still shouldn't leave your girlfriend at the club with no way to get home. You should take her home and then talk to her about how you feel tomorrow, after both of you have calmed down.