[delay]

So after this second time, it was obvious to me that she was flashing my roommate in the mornings and they were both enjoying it. I had two feelings about this: one was jealousy, and the other was excitement about her showing herself to another man. I was bothered by the fact that she wouldn't let me in on it, but I guess that was part of the excitement. I wanted to figure out how to get her to be naked in front of him, in a way that she could enjoy, but with me present, or at least in on it.
One morning, she wakes up and wants to make tea for us. As she reaches for a robe, I tell her with a smile "you don't need that... he's probably still asleep anyway". The idea of her agreeing to be naked in the house with someone else present was itself a turn on. While she is in the kitchen naked, I go out to the living room where my roommate is sleeping on the couch. When I hear her walking back down the hall with the tea, I shout out to her that I'm in the living room. She walks down the hall towards the living room, and I thought "my moment is coming", but she stops just before the doorway, pokes her head around the corner and holds out my tea to me. My roommate, now awake, was looking at her curiously. She kept her body hidden by the wall, and said to him, "I'm naked...What? It's too early for clothes!" and then she began walking back to the bedroom. Hearing her tell him she's naked made me a little hard. It was strange - she liked showing him her body, he liked looking at it, all three of us knew it, but because she didn't know for sure if I knew it, she wasn't comfortable doing it in my presence.
I thought the moment was lost for now...but before she got back to the room I called out to her come back and have her tea with me. She hesitated, and I added "it's okay he won't look" and laughed. That little gesture was all she needed and finally, she turned around walked back to the living room, and this time came in, completely naked, her right arm holding a cup of tea, her left arm covering her big brown breasts, and her black bush completely exposed.