People that have a good amount of common interests establish a basis for falling in love in the future.
As they get to know each other and share time, they develop a stronger bond.
This bond leads to more personal information being divulged to each other.
This is multi-layered personal information, including that which neither party is all that proud of, but is open to sharing due to the level of trust that has developed.
When you are in love, every waking moment during your day is consumed with thoughts of her.
You are wondering about what she is doing, where she is, who she is with, whether she is thinking of you, etc.
You think about her so much it almost feels as though she has taken over your whole consciousness with a fierce and unrelenting grip.
Since you have never felt anything like this, you know that this is totally unusual from what you are used to.
There has been constant disappointment in your dating history.
You meet men that seem promising at first, but the courtships fizzle out.
This has occurred often enough to give you the impression that there is a flaw about you that ultimately turns guys off.
A guy goes from showing an initial interest to no longer wanting to talk to you or hang out.