What should I say to my girlfriend on her first anniversary?

With the passage of time, everything has changed except a heart that loves you.

How time flies! If you are worried about the battery, it will still go. But so what? I still love you.

365 days a year, how many days and nights do I think about you? I love you.

Honey, I love you. Sometimes, perhaps the shortest words are the best.

A year can change a lot. It can relieve people's pain and soften people's feelings, but it can also improve your and my piano skills.