Do I regret my past?

First love, what can i say? They are the ones we remember throughout our whole life. Looking behind, the moments where you begin to feel like you are transitioning into an adult, where we start noticing the small things that he did, stupid or not we do not really care. Do we see everything in happiness? Not necessarily. Realistically, we see that even though not all of our first love comes true, there are times where we really believe that it could happen. That we believed being with him would eventually lead to being together, that his and my feelings were reciprocal. But.....what have we become? Have we lose the "believing" part? Is it because of adulthood, responsibilities and obligations that we lose our innocence as a child? Or is it just a part of growing up. Happy endings or not, the memory that we did as a child is truly nostalgic. We can't blame our past actions due to our naivety and small perception of the world but what we did.....I never regret every single minute of it.