I had a lot of fun doing it
I lived with another woman in my early twenties and her fiancé at the time was in the military, she had not seen him in over a year and apologized ahead of time because when he was visiting they were probably going to make some noise. Well he showed up with two friends and we all went out clubbing then headed back to the apartment where my roommate and the fiancé head into her bedroom and the three of us stayed up watching TV.
They were nice guys and nothing was going on with either of them treating me badly and then we start hearing my roommates bed and some moaning so I looked at the two of them and said I was game if they wanted to go into my room and have some fun. The two of them looked at each other then one of them said both of us, at the same time? I told them sure if you want to do it that way and I headed to my room.
They treated me great, I had several orgasms and they had a great time also, I told them what to do pretty much the whole time and already had condoms in my bed side drawer. Both of them ended up giving me oral while I sucked the other one, no idea how many times they came but I did swallow a bunch. They stayed three nights and wow did I have a great time, my roommate looked at me the next day with a smile on her face and asked me who I had sex with last night because it sounded like you were having a great time. I just smiled back and told her both of them and she laughed out loud at that one.