Gentlemen, to many women...
Men who are either;
1. Considered too nice/sweet,
2. Are underconfident/shy,
3. Physically "unattractive," or
4. Poor, financially...
are of generally low excitement to her. That means that, for her, they are not too great to be around as SO's, and are thus, not considered relationship material.
Sometimes it's better to be a confident ass than an underconfident sweetheart type of dude.
It's not a set-in-stone type of rule, but it's a general trend that many guys encounter. Them's the breaks.
Curt
__________________
The problem with being brutally honest in communicating with other people, is that it often ends up creating more brutality than honesty in communications.

{Psychology Today}
"You can't exactly control the way you feel, but you can contain it."
- angelj {LoveShack Member}
"Wise are they who have learned these truths - trouble is temporary, time is a tonic, tribulation is a test tube."
- William Arthur Ward