is there something wrong with me? in spilling out my soul

I am confused. I am very confused with who I am. even though I have a girlfriend, who is the most perfect person I have ever met, I just don’t think I love her. I don’t think I have ever truly loved anyone, I just don’t grow attached to people. you could be the most important person in my life, but if you suddenly walked out of my life I wouldn’t feel sad for more than a day or two. so what’s wrong with me? I’m tired of constantly searching the internet for answers, trying to find a way to fix myself. is love something that I will never be able to experience? exactly how much am I missing out on? I really don’t understand, and have so many more questions