People here are twisting themselves into knots trying to define Alpha and Beta. I propose a very simple definition. An Alpha is a guy who can get sex and relationships (if he so chooses) without and promise or anticipation of resource transfer. A Beta is a guy who has to us resources one way or another to get sex and/or relationships.

A Beta's attractiveness is dependent upon what he can provide. An Alpha's attractiveness is independent of what he can or can't provide.