I'm not sure if you're just annoyed and responding out of a knee jerk reaction from that kind of mind set or not but it comes off as a bit like you're deflecting the exact advice you're here for.

To be honest the way that you expect brand new acquaintances to place high importance on your relationship almost instantly is kind of being naïve. Thinking that because of a brief conversation over the phone there would be some kind of connection that is more than just casual is just unrealistic anyway. If the guy does not call you back that still is no evidence that he is not trustworthy at all nor does it state anything about the person that there is no way to make a judgment on. There is no bond yet, and there won't be with anyone you've talked to once or twice or connected via the internet a couple times. And if there is, like in the case with the guy ready to call you a girlfriend and come stay the night with you, there is a huge problem because the bond can in no way be genuine yet.

True bonds and intimate connections emotionally and mentally take time.

Fact is after once talking to someone most people can still just take it or leave it at that point.

And if you think following the advice of a book is silly, why are you asking random people on the internet who may or may not have less expertise than someone who studied and wrote about the subject?

Sounds to me like your opinion with regards to men or other people is quite low. Going on sites to find a mate or someone to date when your attitude is that you have nothing to change and it's always other people that are the problem is just going to come out in your interactions with them and affect how many guys remain interested beyond one call or message.