Is he into me?

How do you know if a guy is into you? The guy tells you that he likes you and give you his contact numbers, then you chat on the phone with him. He then tells you that he is falling in love with you, we must get to know each other. When you also starting to like the guy arranging to meet for coffee. Boom! The next thing you still find this same guy on dating site still searching, or chatting with other women, but not chatting with you even if he sees you that you are online. I already has an answer, I get the message. He be a guy who is a player even if he is 60 years old +. What kind of a man is he? I keep on asking myself that question. It came to my mind that there some men who are really here because in reality no women can stand them in real life. They are Cheating and playing with women's feelings to boost their egos. Others don't really know what they want, they are just here for fun. How do I know if the guy is into me without getting my hopes high?