The moment someone shows the audacity of trying to keep you around for an exchange of crumbs, communicate to them that you want the whole cake (i.e. that you want to be taken out on a proper date/ build a relationship with this person). If they say they can’t give it to you, that they’re not ready to give you the cake, or they promise they can give you the cake at a later date, leave them where they’re at and move the hell on.