Is it normal to be affected by a girl using me to make my friend jealous, even though I'm not interested in her?

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4 mo
Yesterday I was at the club with my friend and this girl I'd only been with twice before, and I'm not interested in her. She's slept with my friend a few times. She held my hand several times at the club and even put my hand against her stomach.
Updates
4 mo
Then, at the club, she kissed another guy in front of my friend, and he got upset, dumped her, and left. Later, she cried on my shoulder, saying she really likes him and that he probably doesn't want anything to do with her anymore. And when we said good
Is it normal to be affected by a girl using me to make my friend jealous, even though I'm not interested in her?
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