The thing is Helena is not quite ready to call it quits. She has a BBC film coming out which is Liz & Dick but with good actors and not Lindsay Lohan. Helena doesn't want to answer Tim questions while doing press but has ended up saying everything is fine and that the only change in their relationship is they won't work together any longer. I think that is a pretty telling thing since they have worked together almost constantly during their relationship.
A source close to Tim says he is willing to wait but isn't going to stop seeing his new woman but will be more discreet until a separation announcement is made.