Does a dinner date always equal sex?

I hear a lot of men complain they invest time and money into a gal who doesn’t put out or show any interest after several dates and dinners. I would say it isn’t really a transaction of food for sex, but girls do have the tendency to drag a guy along for a bit to have a good experience and not be interested the guy at all. Admitted girls, yes I am throwing a few of you under the bus. I have been out on a date and have the guy turn into a creep and I let him know via text don’t bother me again. I don’t have an answer to this complicated scenario but I want to let you know I feel the pain of investing in someone and you get strung along.