#3 He doesn’t pay for your date. If you are on a first real date and he doesn’t pay the tab when it comes, then there’s a good probability that he doesn’t like you. Even the dirt poor guys want to be the big man by paying the check the first time around.
Guys consider paying for the girl they like a way to show off. If he is asking for “halfsies” half way through the meal, you can safely assume that he isn’t completely into you, or probably likes hanging out with you as a friend.