He uses the wrong terminology in his title as there's nothing different between these two women except one didn't have self respect & the other did have self respect.
The Great Debate: Feminine VS Masculine women (From An Ex-Alpha Male)
Either way this guys summarizes "alpha man" quite accurately. He was a douchebag. Sleeping around with cheap women or those with little self respect.
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His first "Irene" girlfriend was attractive, etc. and yet he refers to her as a "yes man". Translation she was a doormat that he treated poorly - maybe even cheated on given his topic - and because she didn't believe she could get better she took him back. If she'd been a woman of self respect/esteem she'd have tossed him out to the street curb the first time.
The woman he wanted "Jessica" was a decent, attractive and respectable woman. Someone he actually tried to pursue but who didn't even care enough to give him the time of day. He says she married a "good guy" because duh she's marriage material, the sort of women men actually WANT. Men don't want sluts, they want women that'd be good wives & mothers.
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So what exactly is an "Alpha" man? If a man is "Alpha" because he's got a lot of cheap slutty women interested in him, as is typical reality and summarized with link, is he really "Alpha"?