Lovers' secret meeting (5)
I believe the answer is:
tryst
'lovers' secret meeting' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tryst that I've seen before include "Lovers' assignation" , "cattle-fair" , "Rendezvous with lover" , "Rendezvous - assignation" , "Pre-arranged (secret) meeting" .)