@ rey04 and flik:
though i'm not in this situation, this is how i see it now: the couple makes a covenant or promise in front of God and man. of course a promise should be kept, right? now, if you are in a situation where u can't fulfill your promise anymore, then u have to find a way to be set free from it. analogies: if di na ka kabayad ug utang sometimes u ask for amnesty or something. if u promised your child ba kaha nga u'd take him to the zoo and u can't for some reasons, then u ask to be set free from that promise and apologize.
not being able to fulfill a promise could be a "slap on your face" and you're doing the slapping yourself. well, in our humanness sometimes we have to accept that. promises are not to be taken lightly, true, esp wedding vows. but if your spouse is out there indulging in adultery or abusing you mentally and emotionally, then you have a higher order-->responsiblity for your self. you get out and protect yourself.