Attractive person caught behind nurse (4,5)
I believe the answer is:
look after
'nurse' is the definition.
(I've seen this before)
'attractive person caught behind' is the wordplay.
'attractive person' becomes 'looker' (I've seen this before).
'caught' means one lot of letters goes inside another.
'behind' becomes 'aft' ('aft' can be a synonym of 'behind').
'looker' enclosing 'aft' is 'LOOK AFTER'.
(Other definitions for look after that I've seen before include "Take care of" , "Peer trying to find" , "Watch over" , "mind" , "nurse" .)