premise: Gerard lightly stroked Frank 's cheek smiling in satisfaction when Frank began to purr at the light touch , " my , my Frankie , who knew you were so sensitive ? " Frank blushed before he buried his face in Gerard 's chest . Gerard heard a small mouse like whisper from Frank " Frankie ? ... " Why did Gerard lightly stroked Frank 's cheek ?
hypothesis: Because Gerard heard a small mouse like whisper .