My Lords, in Committee, I spoke to a similar but not identical amendment at midnight. Today, I start two or three minutes later. It makes me wonder whether it is a ploy of the government Front-Bench to make sure that I speak to an amendment on this subject after 9 pm. The noble Baroness, Lady Stowell, made that suggestion in Committee. In Committee, I spoke at some length, despite the hour, about the importance of trust between those who enter into matrimony, so today I shall be very brief. Trust can be destroyed if one spouse has a relationship outside marriage and breaks the concept of faithfulness. That extramarital relationship strikes at the root of the marriage bond and can be devastating. It seems to me that the behaviour of the erring spouse should be identified as adultery, as it is in the Matrimonial Causes Act. I do not see why the injured spouse should petition for unreasonable behaviour, which is a wholly different matrimonial offence.
I have made changes to the amendment to refer to a sexual act similar to adultery. I do not consider that it would be very difficult for judges to decide what the amendment means, but it is most unlikely that a judge will ever have to do so. There are almost no defended divorces today. A divorce is a very easy process when it is undefended.
This amendment will apply to existing marriages between opposite-sex couples where one spouse enters into a same-sex relationship outside their marriage, so it is broader than the marriages of same-sex couples and would right a broader wrong. Unlike the perception of many in this House that amendments today are in effect wrecking amendments, this amendment, like the previous amendment by the noble Lord, Lord Elton, is intended to be helpful. It is of a wholly different type and is intended to help faithful spouses to deal
with this devastating blow to their marriage by treating it as a failure of fidelity, rather than a matter of what used to be called cruelty. I beg to move.