Depends how you frame it. If she is your own exclusive, monogamous girlfriend, and you enter with the intention of never entertaining the logical end of 'courtship' then it is unethical.
But if you want to practice dating with a practice girl, go ahead through all the motions, act to your own mind as though you are dating, fuck her ASAP, but never confirm relationship. Stay distant. Reject labels of 'boy/girlfriend' if she applies them, ignore attempts to secure commitment. Plenty of girls will provide sexually in this way without first securing commitment of 'courtship'. Look how many men live lives as married men without getting married; the woman acts as though she were a wife with all the obligations, and he too, but she fails to make him commit to her. Do the same.
If you commit to where she is your girlfriend, unless you're in high school it is courtship, and you're a p.o.s if you use her as your short-term cum receptacle. But if you reject the commitment and she plays along, its her fault, not yours, since you have made no obligation to her.
But if you want to practice dating with a practice girl, go ahead through all the motions, act to your own mind as though you are dating, fuck her ASAP, but never confirm relationship. Stay distant. Reject labels of 'boy/girlfriend' if she applies them, ignore attempts to secure commitment. Plenty of girls will provide sexually in this way without first securing commitment of 'courtship'. Look how many men live lives as married men without getting married; the woman acts as though she were a wife with all the obligations, and he too, but she fails to make him commit to her. Do the same.
If you commit to where she is your girlfriend, unless you're in high school it is courtship, and you're a p.o.s if you use her as your short-term cum receptacle. But if you reject the commitment and she plays along, its her fault, not yours, since you have made no obligation to her.