Be Warned!

About a year ago I had my first threesome. It was with a man that I had been dating and his twenty year old son. We had all joked about it and all three of us did it. I had never done anything like that before and I actually found it quite exciting.
The only problem was that later they expected me to keep doing it with the two of them. I went along with it several more times, feeling sort of obligated. But then I really began to feel like I was being used, which I was. They would take turns and do me multiple times and I was expected to do everything with them. They even had anal sex with me and his son would slap my titties around, which hurt and was not at all enjoyable. When I complained that they were getting a little rough, they just said how women liked it rough. I assured them that I did not and found their sexual demands and behavior abusive.
Needless to say I ended that relationship shortly after that. So be warned about threesomes and know what you are getting yourself into in advance.