But in case a married person declines having sex with their spouse, after a set amount of time ( for example 6 months ), the spouse would have the right to file for divorce without having to pay mortgage. Also, in case married person declines having sex with their spouse and this leads to the spouse having extra-marital affairs, this could not be grounds for divorce or legal persecution.
Marriages for the sole purpose of sex, without the other parties documented consent, should be considered marriage fraud or, in worse cases, rape. If not those, alimony must be paid along with mortgages