[MFM] My Friend ate her out and ate the cream pie I gave her

So this is my first story, please ignore my spelling and grammar errors. Hopefully you guys like it, and we have done a few more things since this. If you guys like this one I can share more :) This happened about 4 months ago.

Me and the GF have had quite a wild sex life and we have talking about threesomes’ multiple times. She wants a girl to join us and I’m all for it but it’s been hard to find someone that’s not part of our main friends’ group. We have discussed having a guy join us but she always has said she would rather have a girl or a couple before we just invited a single guy. The idea of a threesome was not on either of our minds this evening. She’s very submissive and loves it when I get rough with her and call her pet names. She usually refers to me as her master in the bedroom and I caller her my cumslut.