New dating site got going (10)
I believe the answer is:
instigated
'got going' is the definition.
(to get something going is to set it up)
'new dating site' is the wordplay.
'new' indicates anagramming the letters.
'dating'+'site'='datingsite'
'datingsite' with letters rearranged gives 'INSTIGATED'.
(Other definitions for instigated that I've seen before include "Stirred up" , "Got working" .)