Love Is a 12-Bar Blues
Love is a 12-bar blues. Four bars of the I chord, two bars of the IV chord, two bars of the I chord, then the V-IV-I. In every key, it is the same, the same pattern.
No matter how expressive the solo, how expansive the improvisation, everything lives within the set structure. You know how it will resolve. It is predictable, no matter how beautiful.
You can try and play the blues for someone who already knows the form well, who has played it many times before.
But if you both know how it will end, how else can you play the tune?