Yep! It's the handle not your car. Some places, when this happens they take the clip of the hold-down off the pump handle so you have to hold open all the time.
If your car is leaking gas you need to get it checked ASAP. I don't know what the problem is, but having gas flowing out of your car presents a fire danger, as well as a danger to anybody potentially breathing in the fumes. Not to mention wasted gas, which is wasted money