"We're drifting apart,"
said the earth to the moon.
"We've been through so much, hm?"
replied the moon to earth.
"It'll be glum to go,
but sadly I must now."
"Why? Please don't go away,"
begged the earth to the moon.
"I will miss you for sure."
"And I will too," said moon
and earth silently sobbed.
"4.5 billion years,
for what?" The earth whimpered.
"I can't love you anymore."
"If I could say the same."
"..."
"At present, the Moon gets 3.8 cm further away from Earth every year, and it was much closer to Earth in prehistoric times." -Jonathan O'Callaghan, 'Will the Moon ever leave Earth's orbit?' www.spaceanswers.com