I'm not sure you can forget my first love because that's the first time I came to know the opposite sex

There is no particular reason why love is so powerful for me, because this is a collection of tiny details that makes it important. It is full of intense emotions and passionate that I thought would last forever, that may be the reason why everyone says it's hard to forget first love
As I experienced

However, it makes sense because this is the first time I really love and feel loved by others. Even when that relationship ended, he remained a big part of my self.