A bunch of people and an illicit relationship

I was participating in a basketball camp and it was in this old gym, some celebrity was running it (I can't remember who) and it was raining outside. I was one of the oldest people participating in the camp so I felt kind of awkward, but I wanted to learn how to play. I know there was more to this part - I can remember putting the basketball back on the rack at the end of the camp and talking to some people - but that's about it.

Then I was on an overpass/bridge and J.Mo was there, talking to some of our other friends. She handed me a royal blue bubble wrap mailer, then we got into a little argument about who could find the most nail polishes. I think Anners was there, too.

Lastly, I was at a carnival/state fair type of place and B., S.S. and J.F. from work were there. I think A.M., too. Except that J.F. and S.S. kept morphing into one another, back and forth. Apparently I was hooking up with S.S. and then I found out that I was the "other woman" - he had a long-term girlfriend. He and I were in a little corner of the carnival where we couldn't be seen and things were escalating, he was touching me, and then he forcibly pulled himself away and said something along the lines of "I can't do this. I have to stop. I have a girlfriend and we're moving in together!" And then he walked away, leaving me by myself. I have a vivid memory of seeing the girl - blonde hair, prefect makeup, angry eyes - peering around a curtain and seeing me with S.S., kind of the way it would be depicted in a movie. I waited a few minutes to collect myself and then I found B.; he and I walked together and I told him what happened. He was sympathetic, but then I started to get a weird vibe from him, as if he was jealous of my relationship - physical and otherwise - with S.S. We came upon a booth where you had to knock over some bottles with a beanbag and on the first try, B. knocked them down and won me a prize. Then, he saw some other friends he knew and said that he would catch up with me a little later so I kept walking around the carnival and I watched as some people were throwing fireworks; one that was a dud landed next to this guy I apparently knew and he just picked it up and started laughing as if twas no big deal. Finally, I ran into Ilana and she asked me to teach her how to use the treadmill, so I walked over to the side of the carnival that had the treadmills and was showing her how - which buttons to press, to start with her feet on the side and not on the conveyor belt - when S.S. walked by. I jumped down from the treadmill so he couldn't just walk by me without saying anything, as I thought he would have, so he came over to chat for a minute. The treadmills were all up on a platform so I had to crouch down to be eye level with him. He told me that he was sorry and that he didn't want this to affect our work relationship. I asked him how it couldn't and he started to walk away and then I said something along the lines of, "Wait, I'm sorry... it's fine. I understand. If I'd known form the beginning that you were with someone else, I never would have let things go this far. Seriously, I'm cool with this - don't let it affect work." He asked if I was sure and I told him that I was, and thanked him for his honesty. He looked at me kind of oddly then, as if he couldn't believe that I was thanking him, so I said it again, reassuring him that I really did appreciate the fact that he came clean and was honest with me about what was going on. He kind of half-smiled, nodded, and walked over to A.M. to continue on their way. I hung my head for a second, then got up and continued teaching Ilana how to use the treadmill.