Substitution

Spike can't help it. All that staring at Twilight Sparkle. The admiration of her beauty carrying him through bouts of agony. But another fascination has taken him into a craze. Parts of her body putting him into amazement.

Looking at her like that isn't right. Yet he's unable to stop himself. How those glances spark those craved thrills inside his head. Soon their romance builds into something more. And he worries about pushing everything a step too far.