I think I'll miss you forever
Like the stars miss the sun in the morning skies
Lana will always love him, meaning that — ultimately — she will always miss him.
She compares this to the sky and the stars. The stars are never out at the same time as the sun so they never see each other, they are always too late to see the sun. This connects to Lana as now that he is gone from her life, she will always be too late to catch him.
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