Most people think that if they pretend to be interested in a specific topic, it won’t appear to others they are pretending but actually, people do notice.
Similar to creating a character in a story but in real life, a person act or behave as they think how the image in his/her mind could do. I think this is the reason people do not show their true selves.
In my opinion: When a person shows to others his true self, others will love to spend thier time with him and they will really get to know each other because they can show him their real thoughts too. It could be scary for a person to show others his true self without comparing himself with the idea he has in his mind but it is worth it.
Just discovered: To be interesting to others: you have to be interested in the topic you are talking about.
If you are not interested even if you are showing to the other person the opposite, he will notice in a way or another.