There are only 24 hours in a day. The average man has to sleep about 8 hours. And work for 8 hours. That leaves 8 hours to run some errands, drive to and from work, eat, and have some spare time. And in that little bit of spare time, a man has to figure out how to get the one thing he likes more than anything else: sex. So when a man has to choose whether he will hang out with a female and spend any time, money or attention on her, whether the resources he spent will result in sex plays a very big factor. If your male "friend" chooses to spend his time and money on you, it's because he thinks there is a chance it might pay off in sex at some point. If he hangs out with you instead of with some other female, it's because he thinks you are his best bet to getting sex. The more likely there will be sex, the more willing he is to spend his little bit of free time with you. If he thinks his chances of having sex are higher with a different female, he will spend more time, money and attention on her. That's just common sense, and using his limited resources wisely.

Why Men And Women Can't Be Friends