I also wrote a follow up to this article on some of the unique issues shy women struggle with.
I'll break this down further below, but their central problem is that they're just really anxious, scared, and inhibited around women.
Almost all men get somewhat nervous when they have to ask a woman out, or kiss her, or even talk to her for the first time.
It's legitimately strong, not something where they can just take a deep breath and push through it.
Sometimes this nervousness shows up as the physical symptoms of anxiety.
At other times it's more of a powerful, paralyzing hesitation.
Dating advice is outside the scope of this site, with this article being a semi-exception.
Over the years several women have written me to tell me reading this site has helped them understand the actions of a shy guy they were pursuing.