Money and loyalty: A look inside dramatic Trump-Cohen rift

For Michael Cohen and Donald Trump, it's always been about money and loyalty.

Those were guiding principles for Cohen when he served as more than just a lawyer for Trump during the developer's rise from celebrity to president-elect.

Cohen brokered deals for the Trump Organization, profited from a side venture into New York City's real estate and taxi industries, and worked to make unflattering stories about Trump disappear.

Money and loyalty also drove Cohen to make guilty pleas this past week in a spinoff from the investigations swirling around the Trump White House.

The man who once declared that he would "take a bullet" for Trump now is pledging loyalty to his own family and actively seeking to cooperate with special counsel Robert Mueller's investigation.