Star-Crossed Lovers/Playing With

Basic Trope: Two characters are in love with each other, but can never be together.

Straight: Bob and Alice are in love with each other, but can't be together because their families hate each other.
Exaggerated: Bob and Alice can't be together simply because they are from different schools.
Justified: Bob and Alice are a cat and a dog.
Inverted: Bob and Alice can't be together because their families get along too well.
Subverted: Bob and Alice's families dislike the idea of them being together, but it turns out the reason is they thought it was a trap by the other family...
Double Subverted: ...but they still don't want them together.
Parodied: ???
Deconstructed: Bob and Alice's families go to such lengths to keep them apart, Alice and Bob resort to suicide so they can at least be together peacefully in death.
Reconstructed: Alice and Bob's families eventually realize that their children's happiness is worth much more than their rivalry and allow them to be together.
Zig Zagged: ???
Averted: Neither Bob's family or Alice's family minds them being together.
Enforced: ???
Lampshaded: "Is it really that big a deal if Alice and Bob are together? I mean, I know their families have been fighting for years, but come on!"
Invoked: ???
Exploited: ???
Defied: "Look, the last thing I'd want is for my son to be with your daughter, but as long as they're happy, then let's let them be." (And Alice's family agrees)
Discussed: ???
Conversed: ???
Played For Drama: ???