How to get over a really bad breakup?

Me and this guy have been dating but now we kinda broke up. The worst thing is he didn't directly tell me he wanted to break up he just completely ignored me which hurts a lot, considering he told me he really likes me and that he loves me and that I'm special to him and other stuff like this. I don't get why he would do this, like literally everything was going okay and then one day he starred acting different and ignored me, right now I feel really hurt and sad and depressed , I also feel worthless ugly and just everything bad :( why would you think he would do this? What should I do? How can I get over him?
How to get over a really bad breakup?
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