Love and Sex!!

To those People who are asking as to what is the difference between love and sex, yeah! been asking too as to what really is the difference between the two. Moreover, what are the significance of the two also. Some said you can have sex without love and other said you can have love without sex, is it true? However, it is easier to say that sex is faster to achieve than love. Right? I wonder why people get love and sex so mixed up and broken up inside, because some men can look you in the eyes when they have sex with you but afterwards they just immediately turn thier head and run on the other way. And there are also some women who are doing the same way. Why do people act this way? Is it because they are not ready for any commitment or what?