striker jay hart , 24 , was caught having sex with supporter after 4-1 defeat .
he was filmed romping with mystery blonde in dugout wearing tracksuit .
girlfriend bryony hibbert , who has two children , slammed creators of clip .
mr hart has apologised after he was sacked from non-league clitheroe fc .
if you know the identity of the blonde , email : jenny.awford@dailymail.co.uk or call 02036154835 .