Although classified by the Registrar General for Scotland as a form of religious marriage, humanism is not a religion, but a secular philosophy or belief system.

BBC: More Scots wedding couples turn to humanist marriages

Since these tax rules only work on unwinding a legal marriage and not on any form of cohabitation, they remain a gross tax inequity the gay marriage debate has never thoroughly addressed.

FORBES: How Mark Zuckerberg's Taxes Change Now That He's Married

If you like (and this is not strictly accurate in a legal sense but is good enough) there needs to be a marriage of form and function for there to be passing off.

FORBES: If Apple Can Copy Braun Then Why Can't Samsung Copy Apple?

Many girls will take to prostitution, an activity widely practised though strictly illegal, unless it takes the form of a temporary marriage known as the sigeh.

ECONOMIST: And the roots of discontent

Citing the Islamic world's own traditions of erotica, Shi'a leaders in Lebanon are sanctioning the re-emergence of the traditional "muta", or pleasure marriage - as a form of legalised promiscuity.

BBC: lifting the veil

He has suggested replacing register office marriages and civil partnerships with a new form of civil union to "strengthen the concept that marriage is a union between one man and one woman, to leave that to faith to implement".

BBC: Gay marriage: Party leaders hail vote

Annulment, when an applicant says he lacked due discretion to enter into marriage, is a form of sanctified lying about sex.

CNN: Margaret Carlson On Sex And, ...Honesty. Honestly

As a result, they cannot marry in Israel, where the only form of marriage is religious.

ECONOMIST: Israel's disputatious Avigdor Lieberman

This process of self-determination takes a tad longer to form than setting up an arranged marriage.

CNN: African moms: Be patient with your unmarried daughters