What doest it mean when a girl say she doesn't want to get hurt?

Ok so I met this girl a couple months ago and we been flirting back and forth since then but when I asked her out she said that she liked me too but she doesn't wana get hurt again cause it's my senior year and I might move and she doesn't want a long distance relationship because her last one cheated on her and it really hert her.....so what does it mean and what should I do?