<human>: I [22F] have been in a committed relationship with my SO [22M] for about half a year. We go to the same university and are from the same city. Our relationship is amazing, and I am very happy. However, this happiness is preventing me from giving more to the relationship. I have a fear of losing this happiness, and as a defense mechanism, I try to not let myself get too close. 

I realize this is a problem since I want our relation to be deeper. He is great. He understands me. I did not have parents growing up and had been a victim of sexual abuse and violence, and as a result, I never trusted people. I always wanted to be alone. I never wanted to get married, have a family, and so on. However, after meeting my SO, my perspective on life has changed. (Of course, we are early in our relationship, and we have a long way to go. Nevertheless, I never wanted to get married, have kids, and start a family, but I can picture myself happy if it's with him). He has shown me that there is something worth living for and that living isn't just about surviving. 

Although he tells me that he understands that I need time and that he will support me, I cannot help but feel sorry that I tend to distance myself because I am scared to get too close. How can I overcome this barrier? I know he is special and already has been an impactful person in my life regardless of what happens between us, and I want us to become closer.

Give me the gist of the text in a nutshell
<bot>: My relationship with my SO is amazing. I have never felt as safe and loved than anybody else including my family. However, I am scared to give it my all.