Hayate: The Combat Butler Vol. 19

Are Hayate and Maria out on a date? Of course not. As even the most casual manga fan could guess, it's just part of a complex ruse to defeat a psychopathic stalker with a Fatal Attraction thing for Hayate. But then the fake date causes real sparks to fly (and lands Hayate in women's clothing again - but that's another issue). Next thing you know, Nagi is making plans to step up her own game...