Welcome to the boards!
Well done!

You managed to get all the positives of their relationship while skipping over all the negatives. Plus, you got all those lines of dialogue to fit and even rhyme. I'm impressed.
Their feelings--they kept secret, hidden away...
Because they were best friends, and worked together each day.
I like this passage. It describes well why they held back their true feelings.
Clark feared he'd loose Lois--couldn't take that chance...
I think you want "lose" here, not "loose".
What a nice romantic tribute. Thanks for sharing.