I think you done a wonderful job with those prompts, actually you don't really need all of them :) *Hugs*
The whole story just great! Harry work at bookshop, and Severus is the erotica author, their friendship slow and steady (And their "shyness"! *Well, the way they kept their feeling to themselves in those years*) Severus' sudden bust out "Then don't, marry me instead." just "Yay!Finally!" For me :D The ending just perfect! Thank you!!
*Do hope Lovelorn books keep publish!XD Maybe more new materials in there after they got married? ;)*