Mitt Romney, the former governor of Massachusetts and the 2012 Republican nominee for president, said Friday that he’d sought advice from Hillary Clinton when considering serving as President Donald Trump’s secretary of state.

Speaking at his annual donor retreat in Park City, Utah, Romney said he was “shocked” when he found out Trump was considering him for the post. Romney was a vocal critic of Trump throughout the 2016 campaign.

According to Politico and CNN reporters at the retreat, Romney said he took the consideration seriously, and discussed the possibility with Clinton, who served as secretary of state under President Barack Obama. Clinton, Romney said, encouraged him to take the job if it was offered.