On that day five years ago, I crossed the line into infidelity. When my girlfriend's husband's affair was discovered, I was depressed and it was her son's friend, Yuzuru, who expressed his love for me in some clumsy words. I was swayed by his honest feelings, and even though I knew it was unforgivable, I found myself feeling less and less guilty as the younger boy asked me over and over again. Ta. The relationship started out as a feeling of attachment to her husband, but day by day, her feelings for him grew stronger.