Girlfriend's signature: What's the hidden meaning in that spring? It's definitely not graffiti What do the lyrics mean?

Youth is happy and beautiful. Time will slowly blow these shadows away from our memories! Keep the moment of life and add some happiness to the memories. . .

This shows that your girlfriend misses the good old days. She feels that people have grown up, but some beautiful things are gone forever.

If your girlfriend is seventeen or eighteen years old and is in adolescence, this sentence is just a moan of growing up.