The Last Night On Darillium - Doctor Who The Husbands Of River Song - BBC
The Twelfth Doctor and River Song spend their last night together, on Darillium. (TV: The Husbands of River Song)
Love was an emotion which K9 Mark 2 struggled to understand, receiving no clear answer when asking his human company. (TV: Aeolian) Peri Brown defined it to Yrcanos, the man who would become her husband, (TV: The Ultimate Foe) as "when you care for someone or something more than yourself", "sometimes more than life." (TV: Mindwarp)
The First Doctor noted pride as an example of emotions to the Cyberman leader Krail, along with hate, pride and fear. He questioned, "Have you no emotions, sir?" (TV: The Tenth Planet, Twice Upon a Time)