I wouldn't know if that has ever happened, unless I were to go and google it. Same sex couples are just as capable of keeping together a marriage as straight married couples. It's not like they are at a disadvantage. Same sex marriage just isn't legalized in a lot of places. I mean, it's not like many marriages seem like they are working out anyways these days, but I think that homosexual couples have just as good of a chance as straight couples.