Regarding the Matter of Me Being Pressed Into Service Despite Having Worked Hard for the Young Lady and Prince's Happiness

At age ten, I realized I had gone back to the past. In order to overturn my past regrets, I worked hard to make sure the young lady I serve would finally find happiness with the person she loves, but her engagement was broken off again. I was utterly devastated, realizing I could do nothing after all. ...What? Marriage? Why me...? Wait, the young lady too⁉︎ How did things end up like this⁉︎