What would you do? Stay or Move on?

Would you stay or move on if your girlfriend/boyfriend was still on a dating app? In my case, I caught her on Meetme. Her profile says she wanting to date. I ripped into her ass and all she said was calm down, I'm not looking for anyone else, that she has friends that stream on there. My gut is telling me she's lying. But I want to catch her in the act of cheating if she is. What would you do in this situation
What would you do? Stay or Move on?
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