Bilbo and Tauriel have a conversation as he prepares to leave Dale and Erebor for the last time, sixty years after BOTFA.

"No matter how they looked at it, the painful paradox remained: the echo of tears to come, the desolation of her future grief. He was acutely aware of how selfish it was of him to steal an immortal's love. Her kin's music lasted forever, his melody only a few bars and then a sorrowful silence." Post-BOTFA.