Personally I have read many fanfiction that is good but not on FanFiction.net. I don't want to lose the links for them so I will post them here.

The Love of a Good Wizard (HP/TMR & Pansy Parkinson and Minerva McGonagall) Complete

http:///works/266699/chapters/419431

A Single Love (HP/TMR) Complete

http:///works/12725?view_adult=true

The Train to Nowhere (HP/TMR) In-Progress

http:///works/294722/chapters/471912