This happened in July. All of us went on a five-day camping trip. We were all sharing one of those bigger tents with an air mattress in it [like this one](https://i.imgur.com/09pcN3j.jpg). We had never done anything sexual in the presence of each other before this happened.
None of us are really into drinking, but all four of us enjoy smoking quite a bit of weed, so we were doing that throughout the whole camping trip. On the second night, we all stayed up late sitting around the fire as we passed the bong around and just talked and looked at the stars. We all retreated to the tent once it got to about 3:00 a.m. After about 10 minutes, my wife and I noticed that they were kissing, and the intensity of their making out increased to the point where I could sense that something was going to happen. My wife quietly giggled and whispered in my ear, “Oh shit, I think they’re actually gonna do it.”