这话英文怎译?

The most romantic thing I can think of is to get old with you day by day.

The most romantic thing I can think of is to walk to the end of my life with you. ( to let the time gray our hair gradually.)

The most romantic thing I can think of is to get old with you.

The most romantic thing that occurs to me is that I walk down the road of life with you hand in hand.

the most romantic thing I can imagine is to getting old with you

I can think of the most romantic thing is with you slowly getting older.