I am also mono and relate strongly to what mono said about feeling out of step with most of my friends. Infact we monos in poly relationships are probably more out of step than anyone because we really don't fit into poly groups either.
We've been at this for a couple of years now and I no longer seem to get the "ole mono blues". It was like I had to go through a grieving process for the perfect fairytale mono relationship that I am unlikely now to have. But once that was done it was done and I haven't even thought about it for ages. Your post reminded me that it used to be there and now it's not. That's a good thing, thanks