Context: 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 ? ... "

Question: Why did Gerard lightly stroked Frank 's cheek ?
Options:
0. Because Gerard heard a small mouse like whisper .
1. Because Gerard feels affectionate toward Frank .
2. None of the above choices .
3. Because Frank began to purr .
Answer: 1