You can say this:

1. For the rest of your life, Fengxue will be you.

2. For the rest of your life, you will be ordinary.

3. For the rest of your life, you will be poor too.

4. I will love you for the rest of my life.

5. For the rest of my life, I will only have you in my sights.

6. For the rest of your life, you will have a room, three meals, and all seasons.

7. You will be with me for the rest of my life.

8. For the rest of my life, I want to take you to see the clear sky.

9. For the rest of my life, I will be the one who loves you.

10. I will pamper you for the rest of my life.

11. For the rest of my life, I will be looking at you too.

12. For the rest of my life, good morning is you and good night is you.