<human>: Can you condense the text into a few key points?

So I met my now girlfriend about 2 years ago. We started seriously talking in May and we were hooking up for a while and finally decided to be boyfriend and girlfriend in August. She is studying animal science and wants to be a vet. I am in full support of her dream and all that fun stuff. However, the other day we were talking and I realized that vet school is not too far away. We are both juniors in college and I had the idea that she would go to vet school close, in NYC (where I want to live after I graduate) and it would be hard but we would still see each other. The other day, however, she told me that there are only a few vet schools in the country and a lot of Americans wanting to be a vet go abroad to study. Also, they have no free time, even on breaks. Basically, she will be gone for 4 years. She asked me to go with her if she went to Europe but I am studying economics and I have studied to work in the United States, not in Europe and I'm afraid that if I go to Europe, I will be behind when we return to the US because I'll have 4 years in European economic experience. 

I talked about splitting up and getting back together after if we both feel the same way but she said no because she can't get back with me knowing that I was with other girls over the 4 years. What I'm afraid of, if I say "yes" to staying together, we won't because that will mean I'll abstain for 4 years and hope that she will be the person I love when she returns. However, 4 years changes a person. So I'm afraid that after the 4 years, she won't be the same person and we will break up. Breakups happen but that would mean that I just waited 4 years to break up and I'll be 25 with no idea who I want to be with after being abstinent for 4 years. 

I know this is kind of all over the place but are there any other options?
<bot>: Girlfriend is going to vet school in a year and a half, don't know what to do with our relationship. What are our options?