Love a valuable collection (8)
I believe the answer is:
treasure
I believe this clue is a double definition.
'love' is the first definition.
(both are terms of endearment)
'a valuable collection' is the second definition.
(Other definitions for treasure that I've seen before include "Stored-up wealth" , "Prize highly" , "Accumulated riches" , "Quantity of precious objects" , "R L Stevenson's island" .)