*purrs* They make such a perfect couple writen like this.

Schuldig arched as Crawford suddenly bit his shoulder, hard. “You’re not paying attention,” Crawford growled into his ear. Schuldig grinned.
This and the description of Crawford's mind make my inner fangirl dance in glee. Seriously, "a cool, methodical hum at the surface, and a rich, simmering storm underneath" - beautiful. ^__^