I know you already made your decision but I wanted to give you my opinion.
I would go to Ohio, if I wanted to save the relationship, which it seems to be pretty serious. You two are in love but I don't see that lasting too much longer with the financial future that awaits you in NC. I know you are going to school so you seem to be in the right track. I guess he has a job, just not one that pays the bills?
He is getting an offer for a job, a downpayment on a house and a car. Who can turn that down? There are schools in OH, so your school would continue, weather you continue at your same school online or transfer.
You need to go to help him get started and to save the relationship.
It is going to suck for you, if you are close to your family. There probably is no going back is he is working for his dad's company. I mean, you can get used to it but it will suck for you. You might see your family once a year if you can afford it.
Yes,you can plan on going back to NC, but will he be able to?