2005 Hyundai Elantra Overheating Engine Cooling Problem, 2005 Hyundai Elantra?

Engine cooling problem, 2005 Hyundai Elantra? - 2005 hyundai elantra overheating

2005 Hyundai Elantra 4 cyl Front Wheel Drive Automatic 70.000 miles

I was overheating on the highway (70 +) and my engine, I did not know of until I left for later. I had a leak in a pipe that I know nothing. I have tried to bleed the radiator, I added water and antifreeze in the radiator more water (as anti-freeze at this point). The reservoir is empty, no heated pools of water,) to (flood, controls the oil, a bit high (hot), but do not beat until fluffy. The heater is hot. For a period of a mile or two fine then starts overheating. If it's a little hot and I hear and see that I hear gurgling, vapor-liquid overflow into the reservoir. Once they cooled the tank dry. No strange noises pump out the water. Sit back a cap on the radiator. What is the problem and how can I solve this problem?

A girl at work said I might need a new engine, it could also lead to the entrance and go, if so. Suggestions? I am a little worried.

Thank you forYour help.