Charles has been a controversial royal over the years, from his affair while married to Princess Diana, and alleged persistent political interference, to occasional gaffes and scandals involving aides.
Prince Charles was only able to muster enough enthusiasm to reply: Whatever ‘in love’ means.
William and Harry s mother would later reveal the profound impact Charles disinterested reply made on her.
In the documentary, Diana: In her Own Words , she said: That threw me completely, I thought, ‘What a strange [answer]’ - absolutely traumatised me.
Diana and Charles publicly announced their engagement in February 1981 (Image: Getty)
Diana and Charles in happier times (Image: Getty)
The Wales marriage would soon hit the rocks, as Diana realised that her husband had never stopped loving Camilla.
In a frank interview with BBC journalist Martin Bashir, the Princess of Wales confided that “there were three of us in this marriage, so it was a bit crowded.