Dannie Abse The Malham Bird

Abse remembers the first holiday with his wife in the first three stanzas. We get the impression that this holiday is very dear to him as he clearly remembers lots of details about it. However in the last two stanzas there is a philosophical shift as Abse talks about 'the Malham bird' a Jewish legend of the bird of Eden who obeyed the commandment not to eat the forbidden fruit even when the other birds ate them, they get banished and he lives in paradise forever alone. 

You could link this to Larkin's poem The Whitsun Weddings as not only is there a underlying message about marriage in this poem, but there is also a philosophical shift at the end of the poem.