Warren continued his affair with Carrie Phillips, alongside other women like the young Nan Britton, despite the suspicion that Phillips was a German spy. This proved to be untrue, though she did have sympathies with the German cause. Florence found out about this fact, perhaps being told by her husband, and reacted with rage. During the summer of 1918, while greeting soldiers leaving from the Marion train station, Florence spotted Phillips complaining about the futility of sending men to fight. Florence approached her and got into a heated argument, publicly rebuking her in front of many onlookers. Despite this public display of his wife's temper, Warren soon after sent Carrie love letters proclaiming his devotion, albeit with the caveat that a divorce from Florence was not feasible.