trying bi

It's been a few years since my one and only time of going bi, but thinking about it is still a turn on. My female friend is submissive but the dom she was seeing at the time wanted to make her more dominant in hopes of having her recruit and help control other submissives for him. She knew i was bi curious and also curious about being submissive so she asked if i could help out as being her sub for the night.
So I went to her place for the night. Her kids were at their dad's and it was just me, her dom and myself. Her dom had her sucking his cock right away and told me to strip and watch what she was doing. She sucked him fr awhile as i watched. Then Sandy's first command to me came... She ordered me to eat her pussy and get her ready to be fucked. So i started eating her pussy while her dom stood over me watching. I ate her to a couple orgasms. This was all I expected to happen as i thought i was ythere to basically watch him fuck her after all the times she and I had been together but i was wrong.
"Suck his cock" she commanded. I had never looked up close at another cock before. He was a lot bigger than me, at least a couple inches longer so I'd guess about 8 inches and fairly thick. I was thicker but he was a lot longer and looked impressive and I started in. I licked just the head at first, then licked the shaft and his balls. Then Sandy told me to take him into my mouth. I had never done this before, so i just focussed on what she had done earlier and wrapped my lips around his cock and started bobbing back and forth. She shoved my head down on his cock and told me to go deeper. By this point he was basically fucking my face. I started to gag whe he went in balls deep and had to pull off o catch my breath. Sandy then laid back and he fucked her as I caught my breath watching his cock pounding her pussy a couple inches from my face. Once he came in her, Sandy ordered me to eat his cum out of her pussy and he went for a quick shower. She told me what a good job I;d done. He came back from his shower and Sandy had me lie on my stomach. He started rubbing his cock against my asshole. i so wanted to ask him to fuck me but i was too embarassed to ask as i'd been brought up believig that gay sex was wrong and Sandy was too submissive to order me to ask for it.
The pandemic started a couple weeks later and the i-opportunity for a repeat session never happened, but I very much wish it had.