Sharing

My girlfriend and I have been together for 5 years. we talked about sharing her, but she would always say no. She said it would never happen, we talked on and off about for a couple years. she said no she didn't want to cheat on me. I told her it's not cheating if I watched. Answer was the same no. one day out of the blue I get a text from her saying ok, I'll do it. I almost fell out of my chair; we haven't talked about in a while. Well, we did it. It was hot for both of us. Now I created sex monster. lol. She loves fucking other men and getting stretched. we both love it!