I agree with the others for the most part, from what you have said it sounds to me like you are not compatible with this couple and it is time to move on.
That being said, I can also see, just from the impression I get from your post, that maybe, despite your previous swinging experience, you just aren't ready for swinging right now. The reason I say this, is that the undercurrent of everything you said here, no emails unless cced to all, no kissing, no phone calls, all lead me to believe that you have trust issues of your own. I have to admit, if we met you and got the same impression of you as I have from reading your post, we would view you as drama waiting to happen, and avoid you like you had the plague.
I hope you are not offended by this, keep in mind this is only my opinion based on what you posted above. Without knowing you and having all sides of the story, their is no way for me to really know what happened. But by the way your post struck me, it seems possible to me that you may not be blameless in this situation. Normally, I wouldn't have said anything, but it strikes me that if you continue to pursue play partners without a bit of self analysis first, assuming my first impression here is correct, that you may find yourself repeating this scenario again in the future.