Clearly, I don t know any of the professionals (although I follow a few of them on twitter!) ...
but it seems to me (probably being presumptuous - saying that first before anyone else does lol) that some of the professionals seem more genuine and likely to continue their friendship with celebrities after a season is over compared to others
Those that I think are more likely to continue friendships include:
Karen, Anton, Erin, Ian, Matthew, Ola, Natalie, Robin, Brendan, Katya
Some of the others I doubt will intend to maintain the friendship including
Kristina, Aliona, Brian, Lilia
Not sure about Artem and the others