Your problem is that you are too eager.

Even if he took it, he could have said, I thought it was public **** for everyone to drink, but it turned out to be yours, well, I'll pay you back, cheap bastard.

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So the coping strategy is, the key is that you have to understand, what kind of person is he, the person who takes advantage of small advantages?

If there's no video this time, what about next time?

Maybe, the next time he takes advantage, he slams a video. Oh, how can there be a video? You tell me.

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If you're intent on getting things done, you have to know your enemy, be patient, and be willing to give up.

Otherwise, if it's just whining, forget it.