How to choose better guys?

I’ve never had a boyfriend but all the guys I’ve been in talking stages or that have been interested in me have ending up being what i assume to be narcissistic start off incredibly sweet and affectionate and showing tons interest in dating before turning cold and playing kind games (talking about how they flirt with other women to me) when I express anything back. I’m always the one being pursued so im not sure how I can avoid falling or guys like this until after I see their true colors.

How to choose better guys?
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