Mark was embarrassed to have a crush on such a pretty young thing like you. What was a 48 year old man doing by having a crush anyways? He should have been married with kids a long time ago. But he was too focused on Oscar, wanting to make him the next big thing. Too focused on other projects as well, managing other clients, being the ambassador of Porsche. So a crush right now is just down right unacceptable. What the hell was he going to do?
He knew he was screwed over when you had asked him why he couldn't love you like he would have if he was younger. It was just unfair to you and to himself. He could invite you out to Amaroo, go to Monaco even if he didn't fancy French cuisine (sue him), maybe take you out to dinner. But he could see the headlines. Mark Webber stuns with new darling! All the comments when they find out who you are, what you do, how old you are. It made him feel green.
"You know why, honey. It's just not appropriate." Was his lame answer, even if he was burning on the inside for you.