2003 Hyundai Elantra Driving Car On Freeway About Hour Running Perfectly Fine

I was driving the car on the freeway for about an hour, it was running perfectly fine. Then when I got off the exit ramp and came to a complete stop, the car died. It made no noise it was like I turned it off. I tried to restart it but it would not turn over, all the lights on the inside would work, but it would just make 2 small clicking noises. My boyfriend thinks it is the starter, but I am trying to get some sort of confirmation before we go and spend the money on a starter and that not be the problem