Would you dat a guy who approached you in a bar but was there by himself ?
I think the answer is no... but maybe she wouldn't know you are there alone.
Anyway... how should I approach a girl in a bar that I go to alone.
Should I say ' Hi - my name is George how are you?'
or 'Hi - did you used to go to such and such a school, you look familiar'
'I've seen you before, aren't you a model ? Maybe you should let me buy you a drink so I have some more time to think about it?'
'oh wow * look at her* my name is george, whats yours ?'
or try to come up with some smart ass comment and hope she finds it funny ?