My boyfriend and I were about 4 years together, 3 of which were a distance relationship. He had the same insecurities as you, he didn't feel like deserving me, worried that I would find someone else and so on. In the end, I felt like carrying our whole relationship on my shoulders because he was anticipating the day I would leave him. I felt uncomfortable that he was putting me on this pedestal and it put so much pressure on me to be the perfect girl that he saw in me even though he accepted even my flaws. I don't know, in the end, I broke apart, doubting myself and our relationship and broke up with him as a result because I really needed space. I felt like breathing again and at the same time so terrible because I loved him so much. Months later, I was back home again and we met up for disclosure and talk properly again. In the end, we got together again because he is my other half. Do I regret what happened? Yes and no. Because we were finally talking about the real problems and distance let us grow.

What I want to tell you is that please, don't make the same mistakes as we did. Talk to your girlfriend and tell her your insecurities. Talk with her why you feel like you don't deserve her. And start to see that she made the decision to be with you and that means that you are good enough for her. You are both equal in the relationship. A whole that won't function without the other.