Should this bother me?

My girlfriend told me yesterday that at the point, for me at least, when feelings were really developing she was talking to someone for a short amount of time (Like 2 weeks she said) and she kissed him. She's said he was an ass and all of that and ultimately stopped talking to him and now her and I are together.

She met him through tinder and her reasonings for using tinder changed 3 times. Which I thought was weird that her reasoning changed.

Her and I weren't really like talking when she kissed this guy. But it bothers me.
Should it?
Should this bother me?
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