"Keira says she needs him. They have become good friends," the Telegraph quoted pal as saying. Knightley has become guarded since a man verbally abused her in 2008.
She said: "I got such a shock, I couldn't say anything and this guy took incredible offence and started hurling the most amazing abuse. It's a weird thing to have to deal with, not on a day-to-day basis, but it has happened enough to make me quite jumpy. I've never managed to get used to people recognising me."