Maedhros had lived a long life, marred by many hardships and burdens. From the Oath that forever shrounded him and the rest of the House of Feanor in infamy, to his capture and torment for nearly 30 years in Thangorodrim, he had not had an easy time of things.

Though Maedhros's heart burned bright with determination and fierceness, he was not without his private struggles, where the past weighed on him.

Unlike most elves, who found their soulmates, their One, within the first few centuries of life, Maedhros had gone a very long time without ever meeting his. He concluded that one as scarred and bathed in blood must simply be too far gone to have a soulmate.

Therefore, imagine his surprise when he encounters a stranger by chance, and a mark begins to glow on his wrist, indicating he had met his One.