I'm having a hard time getting over my break up

Back in the beginning of October I met this super great guy, all of our feelings were clearly very mutual from the start. He moved things along super quickly and made it really obvious that he was serious about us and about me. He made me feel so special. Got to know my family, friends, supported me, did all of the little things I've always wanted past boyfriends to do without me even having to ask. He was so smart and well mannered. He's also so family oriented and is really focused on doing the most he can for his future family. He really made me feel like what we had was special... and then he left. In one weekend, he suddenly (he even admits it was sudden) lost feelings for me. I've been through break ups before (even a long term 4 year one) and for some reason this hurts even more, although it was MUCH shorter term. I'm 21 if it matters. This happened about 2 weeks ago now yet I've still been crying every day, I'm so hurt and want him back but haven't contacted him because I know it'll get me nowhere and logically I never want to feel like I have to beg for anyone to stay. But I do really feel like he was special, I've never met another guy my age who shares all the same values as I do and is as serious about having a good family in the future. Any tips?? :(