I went to tulsa with a friend I met online
Did you guys hit it off?
We've had some disagreements but it's no real problem.
Friends will always have their differences. Agreeing to disagree is what separates fair-weather friends from actual ones.  Do you think this is someone that you want to remain friends with?
We didn't part on friendly terms though. I feel like he was out to ruin my trip.
In that case, it sounds like maybe you're not as compatible as you thought at first.  Since this is someone you met online, it's okay if you don't want to pursue the friendship further.  However, I assure you that he wasn't deliberately ruining your trip, he probably just had different ideas about what to do.