Night owl with my boyfriend's friends

My boyfriend decided to have a night owl party with his friends. He took advantage of his parents' trip and arranged for everyone to bring their computers and play games all night. Coincidentally, it was the weekend I was there too. He asked if it was okay, and I promptly said no. I knew his friends and always enjoyed watching them having fun.On Saturday, it was still 8 p.m., but the lights were all off. The five of them were in the kitchen screaming and laughing, and I was in the bedroom watching TV. Some time later, I decided to go to the kitchen and watch their game. I sat next to my boyfriend, and we stayed there for a few minutes. We always like to do things in public, so I knew I had the freedom to do what I did at the time.