Why so interesting? Because it unavoidably made reference to aspects of history that most Westerners never learn about.
The history Westerners are presented with today always puts us in the position of "powerful oppressors". The assumption is that humans are naturally oriented toward "equal freedom" but that Westerners have perversely denied this good to humanity by asserting their dominance over everyone else through acts of racism, sexism, colonialism etc.
So history becomes a parade of white men oppressing Aborigines or black Americans or some other group and the acts of resistance by these oppressed groups to secure a human future for all.
Whites come to be seen as exceptional in history, a dominant group inventing categories of oppression from which humanity is struggling to be free.
The real problem for Westerners is that our period of ascendancy lasted just long enough for us to be tagged this way by the liberal left. We were still dominant in the mid-twentieth century, so we got to be the ones tagged as uniquely responsible for the absence of a leftist utopia.
So let's go back to Suleiman and Roxelana. What does their love affair teach us about the past?
Crimean Tatars in the 1520s, taken to the city of Kaffa, a centre of the slave trade, and then selected to be part of the harem of the ruler of the Ottoman Empire, Suleiman the Magnificent.