Advice please!

Kelsie

So my girlfriend is going to college at the end of this year while I will become a senior. She will be moving about 8 hours away from were we currently live. I am a little insecure about myself so I fear that she will leave me for some hot college girl, yet when I bring it up she tells me not to worry. Any advice on how we can get through long distance and help each other through it?