<human>: Can you summarize the given text in a few sentences?

I've been going steady with this gi since we were Freshmen. We've been through a lot as a couple and we are both very mature about this relationship. I'm pretty confident that I love her and I've told her this before and she says it back. I've got a problem though.

School is basically over. Just gotta finish our senior projects and the exams and we're off to adult life. I have a great job at the movie theater that pays well, and I've got great grades. She is just as successful. The last two years of my life, I've been producing a movie with her and I've managed to get a distributor for our little indie flick (yay!) so that means that I'll actually be out to promote this movie and I'll have a headstart in my dream career. 

I know that she loved making the thing with me and I know that we love each other. I wouldn't bring anybody else with me on the journey of a lifetime. But how do I know that this relationship isn't just a schoolyard romance type of thing. I really don't want to travel to places like Canada, L.A, U.K, and other exotic places only for us to lose interest in each other along the way. 

Maybe I'm just a dumb kid who doesn't know anything. But I don't know how to approach this. I love this girl, but do I love her for the right reasons?
<bot>: About to leave to release my indie film. Do I bring my High School Sweetheart along to live this life with me or is this just a schoolyard romance?