Is this cheating??

[Kckelley]

Hooray for internet advice!

Seriously though, this is cheating. She cheated on you, and if that was all it took for her to betray you like that, then it'll happen again. Being drunk isn't an excuse. The guy being a stripper isn't an excuse. If you roll over and turn a blind eye to this, you will be miserable. I hate to say it, but leave her and find someone who will actually respect you. You can obviously do better.