I don't think she owes him anything and she never led him on at all. After the way he treated her in the task and calling her 'that', she had even more reason to not care about his feelings.
However, Bear - he is the massive culprit here, and I think he knew exactly what he was doing, he probably does not even like Chloe, but used her as a pawn in his game. He was definitely trying to wind up Heavy D, it was so obvious.