It is not about shortcomings, but lack of experience.
As a rule, if a girl is beautiful, clever, with an affair, etc., but at the same time one, especially if she is over twenty years old – she, first, just doesn’t know where to look for a couple, how to flirt, how to let someone know who she likes, that he likes her, because she once did not learn, and then it became as if it was too late and the circle closed. Second, she is afraid that she and her inexperience will be laughed at. Third, they are afraid of being foolish. There are a lot of good guys, but there are also a lot of goats, and she, due to inexperience, cannot distinguish immediately. If no one ever loved her, she has a very low self-esteem, and she doesn’t want anyone to understand it and take advantage of it.
And very often no image of “who I would like to see next to me” has such a girl. Where will she take it, if she did not have a relationship and about the desired qualities of a loved one has only a hypothetical idea, often far from reality.

Author, how do you know me?? to

Author, where are you driving?? to

Believe it or not, but among the representatives of both sexes there are people who have not learned in time (and all because they are accustomed to understanding life by books).