<human>: Condense the text into a few key points

I know that this post will receive a lot of criticism if anything, but whatever i need advice. Backstory: I'm 19, freshman in college, been in a relationship for 2 years, a few weeks ago i broke up with my gf because i wanted to see what else is out there. This past weekend we got back together when she came to visit. She is in Maryland at school as well.

Basically I'm really confused about my future, i don't know what i want to do as a career anymore, I'm a poly sci major and i want to change my country (U.S.A.) for the better but at this point i dont know if it's what i'll be happy doing. On top of that i don't know if i really want to be with my gf, i do care for her a lot, and i love her, but i dont know if i love her enough to want to spend my whole life with her. I could see myself being with her but I'm not sure if I'd be as happy as i could be.
<bot>: (19 years old, freshman in college) Should i continue dating the gf of 2 years or explore more options and most likely lose her forever? And what should i do about my career doubts?