He knows what she's like. The public knows what she's like. Marcus rightly and articulately called her on it. Yet Marcus was still seeing himself as her 'friend' (at least at the time of the argument).
So perhaps he's not such a good judge of character that he'd still want to be mates with her after seeing what she's done over last few days? Or he's not being as genuine as some think...?
I like Marcus, but he's not the saint he's suddenly 'become', and has plenty of gameplans up his sleeve - of course he wants to win! Otherwise he wouldn't be going on about being the 'dark horse' throughout the whole series.....
