Brit...I do agree that men wont be happy to know that their partners having a platonic friendship...
but I had before marriage which was 100% platonic...didn’t continue it for the simple reason mentioned above...though I am sure it will the same feeling even if we get in touch now also...

But I dont really agree that its not possible... I know people who share everything with their platonic friend...its not necessary to meet them the bond can become strong by calls or emails...(not necessary that their spouse know about it)

but in most of the cases the guys misinterpret it which makes it difficult to work..