Help me, don't know what to do with myself

My boyfriend broke up with me 2 days ago....we were together but then I jus had a feeling he was doing something wrong, so I got into his Facebook and seen he was talking to many girls, flirting with them, telling them he's going to take them out and for them to chill and they should party and they bring there girls and he'll bring his guys, telling them how beautiful and pretty they are..also saying for them to add him on snapchat, for those who don't know, snapchat is an app where you send pics back and forth ...I confronted him and he breaks up with me, saying oh I'm sorry I just can't be with you anymore, I want to be alone..and then gets mad at me for hacking into his facebook...so since then he's deleted and blocked me from his Facebook and deleted all of our pics that were on there, and he blocked me from snapchat and is jus straight out ignoring me, won't text me nothing...I know I need to move on because this isn't the first time he had done this..but my heart is broken, all I do is cry, I can't sleep..I honestly don't have any friends kus i jus had him and work, so I can't even keep my mind busy talking or hanging with friends...idk what to do, I'm going crazy..I miss him, and to jus think he's out there talking flirting, probably with another girl already