An opening, say, for love (5)
I believe the answer is:
adore
'love' is the definition.
(adoring is a kind of loving)
'an opening say' is the wordplay.
'an' becomes 'a'.
'opening say' becomes 'dore' (I can't justify this - if you can you should give a lot more credence to this answer).
'a'+'dore'='ADORE'
'for' is the link.
Can you help me to learn more?
(Other definitions for adore that I've seen before include "Treasure" , "Very much like" , "Love, worship" , "Love, revere intensely" , "Worship, venerate" .)