Love to be with her (5)
I believe the answer is:
olive
'her' is the definition.
'love to be' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'to be' becomes 'live' (living is a kind of being**).
'o'+'live'='OLIVE'
'with' is the link.
(Other definitions for olive that I've seen before include "Greyish-green; fruit" , "Fruit, source of oil" , "Female" , "woman" , "Mediterranean fruit or greenish colour" .)