Am I Normal?

okay, so, i know some teenage girls are wanting to be in a relationship(which is fine and i can relate to it)but as soon as i get into a relationship the idea of being with the person automatically starts to give me anxiety, but the crazy thing is i can think about dating someone and not feel anxious, i only feel anxious when i’m actually in a relationship. is that normal? am i just picky and don’t know what i’m doing?