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You wrote: "I used to get dating advice from girls they told me to be nice and to be myself. let's leave it at that."
NOt sure if it was meant for me, but I'll respond anyway.
My prior post @lifelike was sent before I arrived at her posts declaring herself to be smart, nonviolent and highly evolved, only to then follow those declarations with wishes for other posters to kill themselves. OK, not important, but kinda fun to write, I'll admit.
Anyway, when going about dating and getting advice about it, an important first step is knowing what it is you want. Not what you're open to, but you want, and then parsing advice and experience accordingly. Bottom line, if you're not an asshole, behaving like an asshole isn't going to find you a compatible life mate....at least I don't believe it will.