Carol Ann Duffy can be a Scottish poet who uses very simple language to juxtapose intense emotions versus mundane and everyday imagery The poem is considered an example of post-modernism mainly because it deconstructs ideas that are witnessed as universal, like the thought of a “purple rose” to symbolise love: https://bookmarkplaces.com/story18698359/indicators-on-valentine-poem-for-your-boyfriend-you-should-know