YANBU
a) She was lied to by Vincent Simone
b) Joe was not a flash in the pan - they were together four years
c) There may/may not have been attraction with Ben Cohen (though tbh I did not see much chemistry but nor did I with Rachel/Pasha) but that does not mean she acted on it at the time so yes, he may be with her now (they stayed in touch working on same charity I think) but does not make her the OW.
Flavia also ended up with her sleb partners...she split with Vincent to be with Matt di Angelo. Then split with him and ended up with Jimi Mistry, now DH.
Kristina attracts headlines as she was labelled hot russian vamp from the get-go. As for the twitter stuff, not sure she did reply to the wife's quite frany bizarre kharma tweet. She told a sender of an abusive tweet to Get a life.
David Seaman got hiscomeuppance on the DOI all stars series - him and Frankie went out early didn't they?
The intimacy with dance/ice dance/acting means that people are going to be close quickly, hence costars getting together, hence Angelina Jolie who has done amazing things still being thought of as a marriage-wrecker.
The men seem to get off scot-free. They are not little boys to be stolen. They make decisions to leave.