For a start you must not debase yourself by asking him back. Secondly when you next go out with someone only do so if they are nice to you and like you as much as you like them. And thirdly see boys for what they really are, don't project your ideal boyfriend onto them and then believe they are that boyfriend. They say Love is Blind, but it doesn't have to be if you keep your eyes open just a little bit. You be careful that you don't become one of life's victims.
Boys come and go, an education is for life so work hard.
I cheated on my boyfirend, Tom for a month and a half. I liked Tom, and I still do. Anyway, just ten days before our four month anniversary, Tom let me go. Beat you to it. And I was absolutely devastated.