<human>: A little backstory for mine, I have hooked up with a coworker of mine a few times already, and have have expressed my desire for a relationship because I actually think we could be something, but we've never made it actually official. Anyway, tonight we were drinking at work after close, and we got pretty trashed. So a friend who lives ridiculously close by offers to let us stay at her place, and Im thinking thats awesome we can just share her 3rd floor bed, and no worries. Except im completely wrong, I drive her there, we drink a bit more, and when she ends up going to sleep with one of the random dudes I dont even know who claims this girl as her cuddle buddy. Try to protest because I am with her, end up sleeping on the floor in front of a different couples bed, 45 minutes later I hear the girl I want to date fucking this random dude through paper thin walls. And proceeded to get the fuck out of there. So reddit, what is your moment where you thought you were being a good guy, only to be completely fucked over in the end?

Can you summarize the given text in a few sentences?
<bot>: Brought a girl I wanted to date to a house nearby because I wanted her to be safe because we were both drunk, she ends up fucking somebody else, I bail.