Did you make a heartfelt personal commitment to the MAN, or did you just promise to take him on as a project? Or to make the best of the soup you found yourselves in?
Have there been times in my marriage when I would have wanted to make a heartfelt personal commitment to my H if I believed it would be returned? Yes. Is that a good enough answer?
Also, I have to say that I don't think that the heart is the organ people should be making any sort of commitments with. I mean would you lend somebody $1000 if they said "I really feel in my heart like I will want to pay you back someday.". You would feel better if they said "I give you my word that I will pay you back.". That is why I initially answered you by telling you what vows I took. I make commitments with my word or my honour, not my heart which is fickle or my soul which is perfect (the soul being perfect makes its own commitments).
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver