In your honest opinion.
To be talking to a group of people online. You fancy one of them so ask your girlfriend to be polyamorous.
Girlfriend isn't happy with the idea of that so you tell her she's pretty much holding you back on being your true self.
You go on a trip with the people from the group chat (share a bed with the one you fancy), then have a deep conversation with the one you fancy, talking about how you have strong feelings for each other and also not drinking alcohol as you might not be able to control what you do.
But thinking it's okay because you eventually told your girlfriend when she asked what happened a few days later.
I'm just curious