As someone that has also experienced it, I am sorry to hear that...however I have to disagree with your points here. To me when people cheat it says a lot about their character. It shows they have absolutely no respect for their partner. Tully has essentially left Tahlia to bear the public pain and embarrassment of watching her partner hook up with a guy that she's just met on national television. If something isn't right in the relationship, you end it. Simple as that. If Tully has been so certain this week that she was going home Im sure she could have resisted making a move on Drew and had enough respect for her partner to wait until she left and broke up with her.
It also shows very weak morals by Drew. It shows that both of them care more about the immediate desire to get some action in the house rather than the long-term pain of someone at home that can't do anything but sit back at watch it unfold. What Tully did was disgusting, but Drew had no hesitations assisting which just shows me that he is as weak willed as Tully.
It's easy to say "these things happen" which is true, but people of good character don't let it. I don't know what kind of people who spend time with, but I've seen from experience that if a taken girl made a move on one of my male friends they would back away very quickly.
And to be honest I don't even think this whole Tully/cheating thing is the only reason people have turned on Drew. For me the backstabbing, gossip and lack of backbone are equally unattractive.
