I Need Helping Locating A Poem.?

I wrote my English 30-1 Part B diploma recently and there was a poem in the booklet that I had to answer questions on. Its about a couple that had just made love. It talks about about darkness and light. It also talks about a window seperating the naked couple from the world and then showing them off when it became daytime. Its set in the winter. It talks about how their breath became frost on the window. Anyway, it was very beautiful. I think it was called Bedroom or something to that effect. Does anyone know the author or where to find it? Ive tried looking everywhere.. Please help?!