I still find the 'aren't CPs enough for them' attitude both tedious and offensive.
CPs were initiated as a sop to gay people so as to prevent them seeking legal marriage: I dare say it was well-intended by those who feared that same-sex marriage would always be an impossibility and that 'something must be done' but, in hindsight, CPs have become a concrete lifebelt wherever SSM is legal.
But how has it been established that there are indeed two classes of loving relationships in terms of how those involved regard the value of their own personal relationship and where one is deemed more worthy than the other - and on whose authority does this view persist?
To me it is a daft as saying that while all workers are required to pay the same rate of NI towards their state pension those smaller that 5ft 10ins in height* should receive only two-thirds of what people taller than this will get.
* or red-haired people, or those able to play the banjo etc etc etc (substitute your preferred characteristic).