Most Helpful Guy
A couple things are in play here. One is that he finds a particular woman attractive, and thinks if he is just persistent that he can break her down or change her mind. This is usually a false assumption, and is narcissistic. It shows a profound lack of respect. Hence the lying/misrepresentation to get what they want, then disappear. The problem for women is that they have to learn how to "read" the men's sometimes subtler actions (never fall for their WORDS), to see their real motives, and the truth of the men they date. Some girls are more intuitive, others are less so. Either way, you will know them by their ACTIONS, not words.
Most Helpful Girl
Some of them just don't care. Others will like those types of women better because they aren't full of STDS and aren't as used up.