Foursome experience?

Me and my guy have been tossing around the idea of having a threesome for a while, but I'm a bit nervous about that and I don't really see it as even if we do a MFF but not a MFM. Anywho, we thought about the idea of perhaps a foursome with no switching, just all of us in the same room. The people we would be doing it with would be one of this exes and her FWB. I'm wondering if anyone has had this type of experience before and how it turned out and if it was worth it. I'm slowly warming up to the idea (actually gave head to my guy in front of his ex yesterday lol) so it'll take a little while for me to take baby steps. Thanks
Foursome experience?
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