I fell in love with my boyfriend I have been dating for about two weeks. I broke up with him because he....?

had with another girl.. : [ I hate him soo much for that. I couldn't stop crying about it and he kept calling me acting like I was still in love wih him. I still like him.. like.. a lot. But there is no way on earth I would go back out with him and let him break my heart again. I can't stop thinkin about it! Has this happened to anyone else so I won't feel like im the only one that feels this much pain before? Or any advice??