Lampshaded: "Why, why, why do we always fail to make out without something happening?"
Invoked: Catherine doesn't want Bob to be Alice's boyfriend, so she is on a mission to stop them from kissing at the last minute.
Defied: Alice and Bob are determined to kiss and do so despite all the distractions.
Deconstructed: Alice and Bob's inability to ever kiss strains their relationship. They begin blaming each other for not wanting the kiss to happen and eventually break up despite being perfect for each other. Both continue their lives unfulfilled and unhappy.
Reconstructed: They meet each other again after being apart for a while, try to kiss for old time's sake, are interrupted again, and decide that it's actually pretty hilarious that this keeps happening. They get back together and live Happily Ever After.