To have loved and lost is preferable to never having loved at all. It's never easy to deal with heartbreak, so we frequently look to this witty line by Alfred Lord Tennyson for comfort.

Sometimes we may never fully recover from that heartbreak. Life goes on despite the lingering effects of love. And House of the Dragon's final episode presented a devastating illustration of how unrequited love can turn sour and murderous.

After spending the previous few episodes looking for the right partner, princess Rhaenyra Targaryen (Milly Alcock) wed ser Laenor Velaryon (Theo Nate) in "We Light The Way."

She was presented with a number of options, but ser Criston Cole's was one of the most painful for us to witness (Fabien Frankel).

The princess' sworn protector proposed to her on the way back to King's Landing from Driftmark, promising her a life full of oranges and free from the responsibilities of court and the heavy weight of a crown.

The complicated relationship between the princess and Ser Criston may be a factor in the knight's perplexity. Rhaenyra seduced Ser Criston in "King of the Narrow Sea" after being rejected by her own uncle Daemon (Matt Smith).

But after being rejected, he gave in to resentment and broke the cardinal rule: you don't kiss and tell. Especially not to the person you were with's ex-best friend and current stepmother, Alicent Hightower, who also happened to be the queen herself (Emily Carey).