I think that jumping from "I barely know either of you" to "we're TOGETHER!" is opening everyone up to massive mistakes.
Everyone is at their best early on in the relationship - what needs to be done is that the compatibility still has to be there once the "on my best behaviour" is gone.
I am very much in favour of the slow-and-steady approach... but that may have a lot to do with my tendency towards polyfi.
Please check out The Birdcage - an open, friendly Polyamory forum for all parts of New York State
"Listen, or your tongue will make you deaf." - Native American Proverb