If it's to keep a promise you made to yourself... I say yes!
Of course, this is not an easy subject to bring up (to say the least)... but does this mean that we need to avoid it or hide from it?
For the most part, people have the greatest intentions when making promises such as "I will love you for the rest of my life". But when circumstances (or people) change along the way, is it really best to stick with something that is simply making both of you miserable (and most likely, the people around you)?
Sure you made a promise that you intended to keep... but you also made a promise to yourself long before making any sort of promise to others...
- You promised yourself you'd pursue a life of meaning and fulfillment.
- You promised yourself you would navigate through life using joy as your compass.
- You promised yourself you would learn and teach lessons of life... lessons of love.
And while it may not seem like an act of "love" to break a promise made to another. If it's to keep a promise to yourself, so that both of you can be happier in time as a result... well, that is most certainly an act of love.