If Lisa dates Frederic, all her achievements will be tagged with his name. Plus, the guy has tons of money. If she really cared about their relationship, she would've literally confirmed it instead of just appearing together. She doesn't need to be an idol if she's already associated with him or cares about getting hate. Also, all of Frédéric's brothers are linked to girls from very influential business families. Frédéric needs publicity, and she needs deals which is fair, since Korea doesn't treat her right.
Oh, and check Zionist frog's profit chart: if Lisa doesn't appear with him for a long time, his profits go down. So constantly appearing together and pretending to be dating is normal.
Lol, he doesn't even have taste. He's never been seen kissing, hugging, or holding Lisa's hand-even though they appear together constantly.
Every time he meets Lisa, his profits go up. I didn't even know who he was before her. He literally follows her everywhere, gaining attention. Good marketing tactic. Hats off to his PR for having cameras everywhere he goes with Lisa.