“Ghosting” is never an option.
Okay maybe sometimes. But almost never.
I’m not talking about flirting with a girl and then stopping. I mean after you’ve gone on a couple of dates and you don’t think you should continue, don’t disappear. Tell her. If you were man enough to ask her out, you should be man enough to tell her it won’t work. Give her something she will RARELY get from a dating experience: closure. Be one of the good ones and have the courage and grace to tactfully let her know you don’t think you two have a romantic future together. Be polite, be complimentary (sincerely complimentary. None of the “it’s not you, it’s me” crap), and conclude your interaction with dignity.