Opinions please?

My boyfriend went away for work. And the girl from the restaurant in the hotel gave her Snapchat to him and they spoke. He never deleted nothing off his phone or anything and he said it was just general chit chat, I spoke to her too and she said the same. But I keep on worrying like what if she went into his room and something happened or they spend the night together etc is it a weird thing to do message someone from the hotel? Or am I over reacting?
Opinions please?
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