Well, it is fact that many authors use the term "neo-paganism" when talking about Courtly Love (both on Google and elsewhere, from what I have read). Since the term and concept of Courtly Love was first popularized by Gaston Paris  in the 1880's, and was not used before then, it may not be surprising if Paris used the Romantics notion of  neopaganism in describing Courtly Love and has now become an ingrained part of the historiography. Indeed, the very idea of Courtly Love some historians believe never existed and was a romantic 19th C idea layered on the past. I really need to re-write this article from a historians perspective, one day.