At the bus stop

You are driving down the road in your car on a wild, stormy night, snow is coming down and the temperature is freezing, when you pass by a bus stop and you see three people waiting for the bus:

1. An old lady who looks as if she is about to die.
2. An old friend who once saved your life.
3. The perfect partner you have been dreaming about.

Knowing that there can only be one passenger in your car, whom would you choose?