I'm an 18-year-old male, and I've been reflecting on my relationship with my girlfriend, who is also 18.

We've been dating for nearly a year, and things are going well between us. However, I can't shake the feeling that I might not be ready to commit to a serious relationship. I worry that it could end badly for us. I truly love her and never want to hurt her. She's an incredible person, and her belief that we'll get married soon makes me anxious; I can't help but think about the possibility of causing her pain. I genuinely feel like I'm the source of her happiness, especially since we share so much about our lives. I really don't want to break up with her, but I'm uncertain about what to do. Am I wrong for having these thoughts?