Well, let me explain it in a more detailed fashion.
Injury to the driver and passanges are always covered whether your friend is at fault or not as long as you have the insurance on the car.
For liability coverage.
If your friend is at fault: the damage to your car is not covered.
If your friend is NOT at fault: the damage to the car is covered.
For collision coverage.
If your friend is at fault: the damage to your car is covered.
If your friend is NOT at fault: the damage to the car is also covered.
Either way, if your friend is at fault and you make the claim, trust me, the insurance company is going to make you pay big later on.