The First Love in the World

He met her in June, that hot season, but by then his heart was frozen; she was as pure as crystal, and such a warm girl was attracted by a cold man. She is the only princess of the prosperous dynasty; he is the exiled prince of a destroyed country. Although his country's demise had nothing to do with his family, he still refused to open his heart to her. Facing her sincerity, she struggled, escaped, had no choice but to refuse, and was finally bound by herself; she kept chasing, searching, reluctant to let go, despairing, and finally left with a broken heart... He and she have known each other since childhood and were childhood sweethearts. Although he appears to be romantic, he still falls in love with her. Seeing that she was interested in someone, he quit with heartache, but he didn't want that person to hurt her all over. If that person really treated her, he would be willing to do it. But with her like this, why should he pretend to be a gentleman and be sad alone... We share weal and woe and never give up. Finally, after washing away all the lead, they went boating on the river. In the clouds and mist, two people seemed to be dependent on each other. Who are the immortal couple?