"We've got enough people trying to kill us, Rico." Garrus replies, his voice dropping to match as he takes a step forward. "Is now really the time you want to start picking at grudges?"

Because he knew this was coming. He knew the next time he saw Rico's smug, venomous smile, that he was going to gloat. Garrus would get to hear about every terrible decision he's ever made and every line he's ever crossed, and it would all build to the point that he's not better than Rico.