<human>: Girlfriend is super chill, totally compatible with me and the first girl I've loved. 

This week, I've taken a few days off work to go to a lake house with a bunch of my high school friends. Tonight, I came back. Me and the girlfriend fucked, ordered pizza, watched TV, usual couple shit.

I asked her how her week went. She told me that she and a couple of gay friends of hers went to a strip club. I don't think she had any contact with the dancers' genitals because she was smiling and joking and not looking at all like she had something to hide (I have made it clear that contact with other people's genitals = cheating.)

But it still caught me a bit off guard. And I'm still thinking about it. On one hand, I'm not comfortable with my girlfriend just up and deciding to go to a strip club. If it had been a bachelorette party or something I knew about beforehand, we could have at least talked it over...but this event was spontaneous. On the other hand, she was very open with me about it, so it doesn't seem like she meant to do anything wrong. The only rule of cheating we established was the "if you wouldn't do it in front of my face" rule. I thought strip clubs would be covered under that. But again, from her perspective, I can't see how she would be doing it with any malicious intent.

Is going to a strip club without at least telling your SO cheating? I don't want to break up with this girl, but I'm not really comfortable with what she did.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Girlfriend went to a strip club while I was away, but was honest about it. I am unsure of how to handle it.