Check out this article about The Tortured Poets (English) Department event in The Villanovan. An excerpt from the article:
"The ideas that were brought forth by students were fascinating to consider and often wove in previous projects of Swift’s to try and make sense of a larger narrative. The group determined that The Tortured Poets Department is likely to be a “break-up,” or heartbreak, album, and discussed at length other past songs that could give listeners an idea of what is to come. Starting with the new song titles, participants picked out “I Can Fix Him (No Really I Can)” and listed older songs they thought may connect in any way. On that list were “The Lakes,” “The Great War,” “Cardigan” and more.
Later, Swift’s brief message was also analyzed by the group. If one has seen the text, the allusions to war or violence become quite obvious. For example, Swift mentions a “tarnished coat of arms,” “loved bombs” and ends this missive with the (edited) immortal line of “All’s fair in love and poetry,” which many know to usually say “war” instead."