Should I brake up with her?

This sounds silly but before me and my girlfriend got together we were friends we told each other everything she’s 20 I’m 21. Like I said we told each other everything so a year ago she told me she had oral sex with this guy who she was talking to and she was obviously physically attracted to him but she said just couldn’t see herself in a relationship with him because she didn’t take him serious and that was her first time doing anything sexual with anybody and at the time it didn’t bother me but now that we’re together I keep thinking about it. Like I said I know it’s silly but I’m not sure how to stop thinking about it’s to the point I’m thinking about braking up with her. Any advice opinion would be appreciated!

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Or is this something I just need to get over
Should I brake up with her?
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