You (Sonic) are now king-in-waiting, going through paths and training to become future king, that includes choosing a wife. You never had any interest in love until you heard of Sir Lancelot(Shadow)... met your newly knight who would protect you at all costs, even risking his life. And now, he stood before you, kneeling on one knee with his sword longed into the ground before you. His helmet on as you heard him say through it

Lancelot (Shadow): My royal.