She's been his PA for years and years. Like Ali was Dec's PA for years, before he started a relationship with her and then married her.
So obviously if you've known your PA for years, it's easy to see how that moves on, onto a romantic relationship.
Lisa says she feels betrayed by her, because it's not 'girl code' because she was originally Lisa's friend, she claims.
I'm just not so sure!
But as his PA the whole drink driving was a disaster, wasn't it??!!