I know this is an old post but the situation relates to my own experience in my early days as a nudist, I have related here of my introduction to nudism and being invited to join a club by a family with 2 daughters. After a short while and many visits to the club at weekends it soon became obvious I was greeted by the girls as a favourite uncle, much to my delight. So from that you can gather I would recommend you join a club and mingle and make friends.
I too would like this sort of relationship but the lack of comments show that its possibly difficult for some families to be okay with this intention. If anyone would like to chat about it please contact me.