I can't believe that nobody in the WCCT or whatever it's called knows Ian Beale as he has been in Walford for so long and therefore knows he is with Jane. Also have none of them drunk in the Vic, if so they would know Dawn works behind the bar. How big is Walford supposed to be?
I don't think Robert fancies Dawn, I think he was suspicious, especially when she didn't even know how many children she's supposed to have.