By Sam Boykin I'm in love. Yes, it’s true. What started as an infatuation has grown into something deeper and more permanent. Lately, we’ve been spending nearly every night together, curled up on the couch sharing quiet, intimate moments. She’s the perfect companion — attentive, accommodating and always there when I need her. Moreover, my wife even likes her. She goes by the name digital video recorder, or DVR, as I affectionately call her, and I can’t imagine my life without her. But someone who’s not so crazy about my love affair is advertisers, who are finding it increasingly difficult to retain TV viewers’ attention.