When Valerie Myers opened her Valentine's card this morning she could have been forgiven for feeling a slight sense of déjà vu.

For 31 years her husband Ken has sent her the very same card. But to stop their romance going stale, he has added a new – and very cryptic – message each time.

The father of five designed the large padded card himself in the Seventies while working as a freelance card designer.

He first sent it to Valerie in 1979 – five years after they wed – with the coded inscription 'Aisle ooh view' – meaning 'I love you'.