the spring comes because the flowers blossom or the flowers blossom because the spring comes?

...

If I could prove to you that I loved you from the start,

would it change anything?

Do you think 

the spring comes because the flowers blossom or the flowers blossom because the spring comes?

What does that mean?

...

Do you remember when I told you that I loved you?

Those distance painful memories

Thought to be only in my youth.