Women really don't 'pursue' men they want... they just don't make things difficult. A quality attractive woman, who is single will have at least three men chasing after her, likely more. They say yes to dates, they show up, and they are pleasant when you are with them. This is as good as it gets with attractive sane women. Rinse and repeat and if she really wants you, she will make herself scarce with the other dudes and focus on the one she really wants.... this takes time and patience. But don't stop dating other women until she loves you, if you are looking for a relationship. The irony is that if you want an exclusive relationship, you have to act and behave like you do not want one.... that you are fine with casual dating... then let her decide if you are what she wants.
If a man doesn't pick up on this and read between the lines, and make an effort to be with her, she will move on quickly... because she has options.
Match her effort... that is really all a man needs to do. But if it gets to the point where you are putting in more effort than she is, chances are one of the other dudes she is dating has more of her attention. At that point all you can do is, again, match her effort, chances are that she will continue to drift away... which is fine... go date other women.
If you are lower on her interest compared to other men one of two things happens:
(1) She drifts off, you let her go... she'll be glad that you are taking the hint and she will have more respect for you, and it is over.
(2) The man doubles down on effort... tries harder... she pushes back harder... the man becomes a scary stalker... now she is afraid of you and her respect for you drops to zero, and it is over.
Bottomline it is OVER. You cannot control how she feels, no amount of effort on the man's part will make any difference. On rare occasions, a man that pursues and pursues might 'get the girl', but really all you have is a woman that is settling for you... and trust me... that is much worse than being alone. Because no one can keep up with the increasing demands on a person as a condition of them being with you... especially if the demands are being made requires the man to be someone he isn't. I know men that have emptied their bank accounts trying to keep a woman happy... I know men that have abandoned what they really love to do, abandoned friends for her friends, for things she wants to do. Eventually the man will resent this... he either ends it (which is the best way to go) or she continues to get b1tchyer and b1chyer, and then it is over. with a catastrophic meltdown.
If it is over, it is much better for your sanity and state of mind to recognize this and let things end as quickly as possible while you move on.