Trusting in opposed forces has some qualities that make it manageable. It certainly can have a way of finding the source of a leak. (However, one could be framing the other, but that might be workable, too.) Since they are opposed, there may be some rivalry for being the better confidante than the other. If betrayed, you have an ally in the opposed individual. Stuff like that.
I know that this discussion was brought up and similarly funneled into about "a trust in human behavior" previously in another thread. And it is, to some extent. Considering my own paranoia and other features, it can help assuage some of it through using what I feel are untrustworthy factors and bring them into interaction to help cancel or balance. There's an inherent distrust between them already, which may inhibit various factors. Anyway, blah blah blah. If the two opposed were to rally in their secrets against me, well, then I feel good about bringing two people closer together. Win-win, right?
And about Ed Edd and Eddie, it was the origin of this alias from ancient times. It's made of fairly common terms, coupled with a large base of media/fan material in pop culture, which can be a fair smokescreen to less persistent types, etc. I've never been anybody else here, even if this name/persona has been exclusively used for this place.
(Ed was also fond of gravy, but I liked/preferred the buttered toast. I love gravy, though. However, the pic for my avi solidified my choice. Simple as that.)