Noticed Me Yet? (English Edition)

Jacob’s in a pickle. He needs a new flatmate, and soon. And what better way to advertise than on the noticeboards around campus?
Trouble is, someone is taking down his ads.
Jacob writes to the offending thief, little expecting to be answered—and soon he finds himself in a deeper pickle: who is this Mr. X that he keeps writing to?
And how can Jacob be falling for him?