Stefan had so many scandals before meeting Cayenne which earned him the name 'rich playboy'. Letting the reporters catch him in his affairs and flings was all part of his plan to tarnish his last name and make his father and grandfather even more angry. Although it failed and on Clara remained hostile against him.
Some of his affairs and flings were true and some were not. When he met Cayenne, he was very honest about it and he told her the truth as well.
Now, he's got so many connections with the reporters. He can give them news if he wants to and refuse their request if he didn't want to. Simple.
Gavin just finished the taping for the weekly variety show, where stars appear to promote their movies or any drama series that they cast in, when he received a call from his manager. She was so angry at him that if ever he was in front of her, she would have clawed his face already.