A promise is a promise. (And an agreement is an agreement, and a contract is a contract.) It will bind for whatever term it stated or until whatever condition was required is fulfilled -- forever if neither was -- or leave a character The Oath-Breaker forever. Unless you're let off. Normally, only the person you made it to can do it, though sometimes the person on whose behalf it was made can -- if Sir Jack promised Queen Alisandrine to protect Princess Esmeralda, either the queen or the princess might be able to let him off, provided he accepts it. Oaths made to a god -- or sometimes just on the god's name -- can be absolved by a religious authority, sometimes. A Magically Binding Contract can mean that only the attempt can be made, though it still indicates Character Development. Usually this is a way to indicate development, and a shift from an almost contractual (if not actually contractual) relationship to an open-ended one powered by love, friendship, or trust. There is always drama inherent, particularly if it started out as a Leonine Contract, in that this will demonstrate whether those things really have that power at this point. Or not. Delicacy may be required to prevent hurt feelings, and if it's lacking, the promise-maker may feel insulted and even rejected. A powerful More Hero Than Thou argument often ensues if the promise-receiver is trying to break the association for the other character's good. Honor may insist that he can not be freed even by the promise-receiver. And insult may be taken in some cultures, where being released from the oath carries the implication that the promise-maker was so flawed that the promise-receiver doesn't want to keep him on. On the other hand, if the promise-maker lacks scruples, or if it was a Leonine Contract, he may be pretty earnest in efforts to convince the other to give up the promise. Exact Words may be used toward this end as well as evading the spirit of the oath. If the character received things in return for the promise, things can get interesting. If the thing is no longer possible or applicable, it may merely be a gracious acknowledgement of the fact. However, if the character gets to keep the things anyway, he will often feel guilty. If he doesn't get to keep it, his reaction may vary from fury in high drama, or despair, to a Hilarity Ensues attempt to weasel the promise-receiver out of freeing him. An exchange of vows often requires mutual agreement, and is very ticklish to bring up. Betrothals are a special case; depending on the culture, it may be only by mutual agreement, only by some flaw, or only by the woman.
- There's an old Sonic the Hedgehog fanfic series by Robert Brown and Francis Tolbert (found here) which has an OC called Dorian Lexford. Snively (one of the villains of the story) saves Dorian's life. Being extremely honourable, Dorian chooses to serve Snively until his debt is repaid. Snively eventually chooses to release Dorian from his debt so that Dorian can be with the woman he loves.
- In Tangled, Flynn presents his efforts to persuade Rapunzel to release him as a generous offer to release her -- she's feeling guilty about abandoning her mother, so he will bring her back without showing her what he promised, and she will give him back what he stole. When that doesn't work, he brings her to the Snuggly Duckling in an attempt to show her the thugs she fears and persuade her thus.
- Later, Rapunzel does rescind it, giving him it back before he has completed his promised portion. Gothel intervenes to make her think that he abandoned her immediately.
- In Beauty and the Beast, Beast lets Belle go of her Take Me Instead promise when they find out her father could die if he doesn't get help.
- In Wild Strawberries, Isak has leant his son Evald a significant sum of money, which he insists that he pay back (even though Isak does not need the money, Evald cannot really afford to pay him back and Evald's wife has attempted to dissuade Isak from asking for the money back), which Evald agrees to do. At the end of the film, after Isak's spiritual journey, he attempts to tell Evald to forget about the loan, only for Evald to cut him off and insist that he'll pay him back.
- Conan the Destroyer. After Conan frees her, Zula asks to ride with him and serve him. At the end of the movie Princess Jehnna asks Zula to be the captain of her guard. Conan releases her from her oath to him (and grants her permission to take the post) with a nod.
- In J. R. R. Tolkien's The Lord of the Rings, Denethor releases Pippin, who refuses it and goes to get Gandalf to stop whatever madness Denethor is up to.
- In L. M. Montgomery's Rainbow Valley, Rosemary and Ellen had promised to stay single together. Rosemary fell in love, and Ellen refused to free her. Later, Ellen fell in love; while she didn't even ask, she told her lover, who asked, and Rosemary nobly agreed to free her and declared she would not tell her love that she was free. Ellen, of course, could not accept her freedom under those conditions. (Fortunately the youngest daughter of Rosemary's love intervened.)
- In L. M. Montgomery's Emily Climbs, Emily goes to college after promising not to write any fiction when she is there. After two years, a rich relative took up paying the tuition, and the aunt she promised tells Emily that since it was in return for the tuition, she must release Emily from her promise.
- In a P. G. Wodehouse Mr. Mulliner story, after discussion on escaping engagements, Mr. Mulliner recounts how Mulliners, being honorable, insist that only the woman can break it off, and recounts a story about a nephew trying to persuade his beloved to do so after he discovers what he thinks is evidence of insanity in his family.
- In E.D.E.N. Southworth's Ishmael Herman Brudenell told his secret wife, Nora, and her sister that whenever it was better to let the marriage be known, they could tell it. Nevertheless, Nora kept her tongue when his mother confronted her and pled the promise. Her sister berated her for it.
- In L. Jagi Lamplighter's Prospero's Daughter trilogy, a Magically Binding Contract holds the winds obedient to Miranda's flute for a millenium. Mab is always after her to break it and free them. Halfway through the trilogy, Miranda realizes that this sort of slavery may be keeping her from becoming a Sibyl and tells the major winds that if they can figure out a way to keep all the winds from wrecking havoc without it, she will free them from it. At the end, she breaks it to free her brother. Astreus gets the winds to behave despite it.
- The Star Wars Expanded Universe has a young Han Solo attempt this with an annoying wookie who won't leave him alone ever since he saved his life. When he attempts to absolve his new companion of any obligation to return the favor, the wookie, by the name of Chewbacca, informs him that he does not have the right to release the wookie from his blood debt. He decides to keep Chewbacca as a traveling companion after Chewie saves him from being shot to death in a bar.
- In Babylon 5, when Londo rather abruptly tells Morden and his associates that he wishes to end their (implied contractual) relationship, Morden rather calmly accepts this, and does some final "settling up with him", demarcating areas of the galaxy where the Centauri were and were not allowed to conquer. Later he seeks and finds a way to reel Londo back in, however.
- In Order Of The Stick, the team's contracts with Roy specificially stated that it lasted until Xykon was defeated. When they believed they had done so, Halley brought this up, but they stuck together anyway. When Roy learns Xykon is still alive, he carefully points this out, shreds the contracts before them, and says he doesn't want to coerce them. They stick together still, having formed a team.
Hello, Unknown Troper. You'll need to get known to lend a hand here.