Although Conservative peer Lord Nicholas True has told a PinkNews.co.uk reader “relationships should be respected equally” – he remains unsure about supporting the same-sex marriage bill.

Lord True, who also leads Richmond Borough Council in south-west London, hit the headlines in March when he suggested the law needed to be changed to prepare for a married lesbian Queen who conceives using donor sperm.

Replying to a letter from a PinkNews.co.uk reader, Lord True wrote:

No-one, least of all me, has defined ‘civil partnership’ as ‘inferior’ or ‘second-class’.  I absolutely do not consider civil partnership to be ‘second-class’, and I take great pleasure in the fact that my local authority’s Town Hall hosts many same-sex unions.

People elect their own affinities and relationships and should be respected equally (that goes also for cohabitation, caring and sibling partnerships), but man and woman are biologically diverse and capable of spontaneous procreation and that was the root of the creation of the institution of marriage across millennia and cultures. The weight of argument for change needs to be exceptionally strong to alter such a fundamental concept.

As to voting I will hear the arguments – and there are good arguments – on both sides and decide accordingly. You will understand in view of the many letters I receive on both sides of the argument if I do not pursue this further.

With very best wishes to you both, whatever the outcome, and long continuance of the joy and happiness you have found in your long partnership.

The House of Commons will debate the Marriage (Same Sex Couples) Bill as part of its third reading on Monday 20 May and Tuesday 21 May.

It will then travel to the House of Lords for further debate, scrutiny and voting.