What should I do if my friend’s boyfriend swiped right on me on tinder?

Anonymous
One of my good friends here in college started dating a new guy which she met on Tinder, and said I should try it as well. I made an account and even got a month of tinder gold, and today I saw that one of my likes is from her boyfriend. What should I do? Do I tell her? I took a screenshot of my likes page with him there just in case.
Updates:
6 mo
For the people saying I should tell her, how do I go about doing so? I’ve never been in this situation before and don’t really know how to go about it.
6 mo
I told her! I sent her a text with the screenshot I took, and she was pretty upset but glad I told her. She confronted him about it over text, and right now we're waiting for his reply. Thanks for your help, everyone.
What should I do if my friend’s boyfriend swiped right on me on tinder?
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