Will You Still Fail Me Tomorrow?

(to the tune of Will You Still Love Me Tomorrow?)

Tonight you're mine completely
Your lemmas fit so neatly
Tonight the Q.E.D. looks good to me,
But will you fail me tomorrow?

Is this a lasting treasure
Or a false moment of pleasure?
Can I believe the logic of your lines,
Or will you fail me tomorrow?

Tonight with words unspoken, I've said you are my chosen one.
But will my heart be broken, when the night meets the morning sun?

I'd like to know your logic is one that's rigorous and true
If I knew now, I wouldn't ask again,
So will you fail me tomorrow?
But will you fail me tomorrow?