Why do ladies lose interest in guys who show a lot of interest? And how do you work around it?

A married woman just told me not to show so much interest in a woman because she will lose interest. Do you agree with her? If so, what is a guy supposed to do about a girl that he is interested in?

If you disagree, how do you explain this phenomenon? People definitely have experienced this, and I'm wondering if this is pretty universally all straight women or for certain types of women or does it depend more on the man?

Updates
1 y
Could it be a NYC thing? Life is definitely different
Why do ladies lose interest in guys who show a lot of interest? And how do you work around it?
Post Opinion