Because they might still be nice people who wouldn't do you any harm ?
If your best mate tells you he's nicked a can of deo from the supermarket, he suddenly isn't supposed to be your friend any more?
I think there is a slight difference between pinching a can of deo (Or is there? I dunno, none of my mates have ever admitted to it) and stealing larger items whilst I'm actually with them, potentially implicating me in it!
She actually tried to steal something with the OP by her side!


. The worst part about it was when my Mum turned up at the station and i could see the dissapointment in her face.