If she is a practicing Muslim woman and there is no legitimate reason for breaking this promise, it is not recommended to break it. But if she is not a suitable woman or not practicing or is not chaste, you must break your promise.
If she is a practicing Muslim woman and there is no legitimate reason for breaking this promise, it is not recommended to break it. But if she is not a suitable woman or not practicing or is not chaste, you must break your promise.