I do pity anyone so far gone they think that this is what marriage is; some kind of odd couple flatmate arrangement. Marriage is supposed to be a union of love – it’s a relationship and it takes work from both sides. If you give up and decide you no longer want to sleep with your partner well of course that is your right but that very plausibly could be the cause of the breakdown of a marriage. You don’t have to sleep with your partner but your partner does’t have to put up with that. Marriage is not a jail sentence