One of my friends claims that her breasts were grabbed by one of her male friends @ school. How should I react to this situation?

One of my friends say that her b00bs were grabbed and squeezed by a male friend while they were alone inside a classroom. No one else has seen it. How should I react to this? She's not too bothered about it. But I'm little afraid that this could happen again.

One of my friends claims that her breasts were grabbed by one of her male friends @ school. How should I react to this situation?
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