@fmf said
How about if they were in love for 23 years and they said so? If they divorced at the end of the 25th year, were they lying during those 23 years when they said they were in love?
If you cannot define your terms, you can say whatever you want, I love you, what does that mean, whatever I want, 20 years later, I love you, what do you mean, whatever I want. If you cannot define what it means to love, it can mean whatever you want it to mean, so no one can claim you were lying.
If your OP was about faith, then what changed? I care for you and want you to be with me for the rest of my life; full stop, I have changed my mind? The promises made, the vows exchanged carried with them a promise for the rest of their lives, not I will have warm and fuzzy feelings for you until someone better comes along.
I think you don't have a clue about the words you are using except on a very shallow level, it may sound good, but the reality of what those words mean either are grounded in some so much more, or they are meaningless, say what you want, you are not talking specifics you are just using words that mean things without allowing them to have meaning.