 We would not be tempted to say that because the promisee can release the promisor at will, the promisor is not really obligated. So long as the promisee has not released the promisor, she is indeed bound. But then we should say the same thing about self-promises: although an agent, as promisee, can release herself, as promisor, at will, so long as she does not release herself, she is indeed bound. (2011, 134–35; see also Muñoz 2020, 697)