My husband knows I use the site and is pleased it helps me. It's a very private thing for me, I wouldn't want my husband seeing anything I write on here,even though there is nothing that need concern him
I think looking at others pms is not acceptable .Maybe he is a bit worried it's like a dating site or something-often we worry about things we don't understand. Can you maybe put his mind at rest by telling him it;s just a support site.