M-743 - One round with the girl bestie before the girlfriend arrives, then a wild three-way

The plan was a triple drink session, but the girl bestie showed up early and things got heated from a past hookup memory. We were in the middle of it when the girlfriend walked in, so we just cracked open drinks. While the bestie passed out from heavy drinking, I got cozy with the girlfriend, and by the time I returned from a quick errand, the two girls were all over each other. Before we knew it, we were all naked and in the middle of a chaotic threesome.