I have to agree with this.
I work away from home a lot, and by "away" I mean foreign countries, for extended periods. To get my jollies I read stories, hook-up for some fantasy in the chat room, look at pics and grab a handful knowing that I will be safe and at the same time, maintain my own personal integrity.
In our situation, we are both free to do what we want but guess what, we never take advantage and have never strayed to pastures seemingly greener.
As Vegas said, 6 months is a short spell and the abstention will add a new height to your relationship back home when you return. Oh yes, believe me, your mutual lover will also appreciate your considerate behaviour. She may not be your wife but she is also a partner and to be respected as such.
I hope this helps!
Z