Today I learn something...
I know this sentence’s meaning.
"Jam tomorrow",means a promise which would never come true.
But it dosen’t matter for me now.
Because I’m fine now,and I’ll be fine after now.
Hey,please keep your promise,we sould be only frind from the begining.
And now,let us do our promise....
Just make friends...should be more better than this situation.
"Jam today",means that the promise would come true right now.