Small snack put together for romantic film (6)
I believe the answer is:
weepie
'romantic film' is the definition.
(I know this)
'small snack put together' is the wordplay.
'small' becomes 'wee' (Scottish term for small).
'snack' becomes 'pie'.
'put together' says to put letters next to each other.
'wee'+'pie'='WEEPIE'
'for' acts as a link.
(Other definitions for weepie that I've seen before include "Film that makes you cry" , "tear-jerking film" , "Sentimental film (colloq.)" , "sloppy work" , "Novel type" .)