But do you think he will he shows up at her premiere in London?

I don’t think so. If you look back, the rumor has started around last October, which means, if it’s true they’ve been dating at least since last summer. He had plenty of occasions to show up at one of her event. They live in the same town, they were in NY at the same moment, but he never did, so I don’t see why it would change right now. I’m fairly confident for this event, we’ll see…