Blonde model in US university romance (5,4)
I believe the answer is:
fairy tale
'romance' is the definition.
(thesaurus)
'blonde model in us university' is the wordplay.
'blonde' becomes 'fair' ('fair' can be similar in meaning to 'blonde').
'model' becomes 't' (Ford Model T car).
'in' is an insertion indicator.
'us university' becomes 'yale' (I've seen this before).
't' placed within 'yale' is 'ytale'.
'fair'+'ytale'='FAIRY TALE'
(Other definitions for fairy tale that I've seen before include "''... of New York'' (The Pogues)" , "Children's story with magical beings" , "'Once upon a time...'" , "A magical story for children" , "Children's magic tale or incredible story for adult" .)