Ser Barristan's Sweet Anecdote About Rhaegar
But what if Rhaegar hadn't raped Lyanna and they had been in love? The seed of that possibility comes up when, in the same episode, Ser Barristan recounts a sweet story to Daenerys about her brother going out into the city to sing to the people. "Rhaegar never liked killing; he loved singing," Barristan says, essentially making the claim that Rhaegar was actually a good and gallant (if adulterous) man. This is Daenerys and Barristan's last conversation, so his anecdote has to mean something. I think it's supposed to establish Rhaegar as an honourable person, not a villain, as only the father of someone like Jon could be.