Worries seeing sweetheart in saloons? (5)
I believe the answer is:
cares
'worries' is the definition.
(I've seen this in another clue)
'sweetheart in saloons?' is the wordplay.
'sweetheart' becomes 'e' (the heart/centre of 'sweet').
'in' is an insertion indicator.
'saloons?' becomes 'cars' (saloon is a type of car).
'e' inserted inside 'cars' is 'CARES'.
'seeing' is the link.
(Other definitions for cares that I've seen before include "Worries, anxieties" , "Minds" , "Feels interest or concern" , "Has concerns or interest" .)