As a romantic star, I act for money (4)
I believe the answer is:
idol
'as a romantic star' is the definition.
I can't judge whether this defines the answer.
'i act for money' is the wordplay.
'act' becomes 'do' (to do is to act or execute a task).
'for' says to put letters next to each other.
'money' becomes 'l' (L can mean 'pounds').
'i'+'do'+'l'='IDOL'
Can you help me to learn more?
(Other definitions for idol that I've seen before include "A graven image, or a hero" , "something to be revered" , "Someone much loved" , "Sacred image" , "Heathen god" .)