Long-Distance Whatever this is....

So me and my girl have been talking for a little over 3 years. Notice I said my girl and not my girlfriend. That’s because when we first met, she made it clear that she didn’t want anything with a title. We discussed it and laid down some ground rules and it was okay. I was cool with that, no pressure and no questions. Well recently, she’s been offered two jobs in two different states. Though I’m extremely happy for her, it kinda raises the question “Where does that leave me?” Then she shocked the hell outta me when she said that she would like me to move with her. But here’s the thing. I’m feeling like I don’t wanna move for someone that’s not fully committed to me. Yea, it may be “just a title” but it’s something worth moving for. I’m not about to pick up my life and move for somebody I’m just talking to and I just happen to occasionally have sex with.... Am I overthinking? What do you guys think?