We all know that JW's don't make friends out of their religion, but in the JW religion, can members have close friendship with the other sex?
The key word here is "close". We all probably had friends of the opposite sex...our best friends sister or brother...a friend's wife or husband...etc, etc. And that wasn't a problem because it was usually in group settings that you ever saw them. At the hall, in service, group "get-togethers".
But when someone had a "close" friendship with someone of the opposite sex, it raised the eyebrows of everyone in the congregation, because everyone had been conditioned to think that any two people of the opposite sex who spent time together must be an "item". And because there were "rules" about members of the opposite sex being alone, it made it hard to have a "close" friend of the opposite sex. "Close" friends spend time together alone. They talk on the phone, they meet for lunch, they shop together, go to games together, work on projects together, just plain hang out together.
I agree that it's hard for an opposite sex relationship to remain purely platonic, but it can and does happen from time to time. In those cases when it did happen in the JWs, life became very hard for those friends because of the JW conditioning and WTthink.