User blog comment:Thailog/Ep. 121 "Image" discussion/@comment-1635895-20120320084616/@comment-3094698-20120320210903

based on smallville, which is my only real experience with superman and related characters, he would have to concentrate to use the power, same for xray vision, micro vision, super breath and all those other powers, so no i doubt he heard what happened unless he suddenly decided to spy on his girlfriend, which is something he would never do from what i can tell