Is normal to feel a lack of desire for relationship?

I have always been okay being on my own. I am not a person who would go to a party or somewher and wish to meet someone special. But lately i noticed this. I have many older friends who are single they are in late 20s. They are okay being single. They enjoy single life, do whatever they want and no drama. Then i noticed that my friends who are in relationship often argue and then they are sitting and look really sad. I would say it is more peacuful to be single. Few months ago I was turned down by a girl I was seeing for some time. So relationships are big no for me. When i am just single things are fine and iam doing my own stuff. Dating and relationships mean so much stress, drama and pain for me.

Is normal to feel a lack of desire for relationship?
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