Cooler dance venue where lovers get together (3,4)
I believe the answer is:
fan club
'where lovers get together' is the definition.
(people in a fan club love a particular thing)
'cooler dance venue' is the wordplay.
'cooler' becomes 'fan' (I've seen this before).
'dance venue' becomes 'club' (night club).
'fan'+'club'='FAN CLUB'
(Other definitions for fan club that I've seen before include "Association of ardent followers" , "for keen patrons" , "Keep place of entertainment cool" , "Organised supporters' group" , "Devoted followers collectively" .)