Folk were able to claim extra State Pension for their dependent but since 6.4.10 that has not applied to new claimants. Folk getting the increase on that date continue to be entitled until 2020 when it will end. When the dependent reaches State Pension age they can claim a pension in their own right and if they have not paid enough National Insurance (NI) to qualify for a full pension, they can use their partner’s contribution record to increase it. Once the dependent receives their own pension, the increase that their partner is entitled to, stops.
In your case gulliver1, the pension your husband received would have included an increase for you, The rate before April 2012 was a basic amount of £102.15 and a dependent’s increase of £58.80, £160.95 in total; from April 2012, the rate is £107.45 and an increase of £64.40, a total of £171.85.
When you claimed the State Pension, you would have received a rate based on yir on contribution record and as you have said, as a couple, you are now better off.