Unexpected threesome [hotwife perspective] [FFM]

I was hooking up with one of my regular bulls last week (not the one who works for my husband). His wife is aware and she's even swung with my husband before. Anyway, she was home, she opened the door for me, talked about the weather, offered me some water and snacks while her husband finished up with some yard work and came inside.

I went and showered with him, which was fun. Some light play and teasing, just enough to get us ready to jump each other when we got done. Then we headed for the bedroom. In my marriage we don't use our bedroom for when I hook up with other men, only ever the guest room, but they don't mind if I fuck in their bed.

So we got in there and we started kissing and touching and getting into it when his wife knocked on the door lightly and then walked in with a basket of clean laundry. She said something like "don't mind me, I'm just dropping this," and headed back for the door, but my bull stopped her and told her to stay. He asked me if it was okay if she watched, and I was cool with it, even excited.

As far as I knew she was straight. Like most swingers, she's probably kissed other girls, but she's never given me bisexual vibes. So I expected her to just hang out, maybe touch herself, maybe talk dirty a little. And that's how it started, but it didn't stay there. I was on my back and her man was eating my pussy when she asked (him? me? both of us?) if she could get in there for a minute and then before I knew it she was sucking on my pierced clit while her husband sat on my chest with his dick in my mouth.

Well, I'm not going to write down every little thing that happened, but this bisexual swinger/hotwife was very turned on and excited to have a new female play partner. I was still mostly just fucking her husband, but she was there for support, helping him stay hard and me stay wet (not that either of us needed a lot of help). Afterward I asked her if she was bi, and she said that she isn't sure, but that she was very open to keep trying it out and see what happens. Maybe next time I go over there I'll focus on her and he can just be there to help out.