I looked through my girlfriend’s phone and found something that made me suspicious. Is this cheating or am I overreacting?

I didn’t want to invade her privacy, but something felt off. Saw messages that seemed flirty or secretive. No proof, but my gut says something’s up. Has anyone else caught something like this? How did you handle it? Did it turn out to be nothing or the start of a breakup?

I looked through my girlfriend’s phone and found something that made me suspicious. Is this cheating or am I overreacting?
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