Being a fan of porn for the last eight years(and very proud that I am one,and a second generation one,at that,as well),I can easily tell you that fans and porn stars do hang out together at porn conventions,feature dance appearances,and fetish parties,and act very friendly and platonic throughout their attire,as well as regularly e-mail each other on a timely basis.
From what i know,the current generation(with the exception of the younger performers)mainly stay at home and only attend event parties whenever they happen,but otherwise no swinging sex-filled life like that which happened in the late 70s,80s,and early 90s.