former soldier has been reunited with his long-lost son after 25 years - spotted his facebook page appealing for help finding his father .
the post by lewis helget , 27 , appeared on darren goddard 's timeline when he logged into the social networking site with the intention of deleting his account .
a quarter of a century earlier , the 48-year-old had made the heartbreaking decision to leave behind his 18-month-old son .