I'm not sure how this season is any different than any other season.I mean Marcellus hated Danielle, absolutely hated her for what 4 years because of what happened his season.
Why is this season the one that thought to be causing bad feelings and hurt?
Every season someone forgets it is a game and wants to believe someone is their bestest friend forever and gets hurt. It isn't just Big Bother either, every show has the potential for people to feel betrayed or get hurt by the actions of others. Even when the peeps on the show are not in control of who goes home. That there is competition for a prize is going to cause tension and drama.
I guess every show should have everyone get to the end and share the prize every season so no one ever gets played or disappointed that they lost.