help me please I'm dying

I....don't know what to do with myself 
Me and my s/o just broke up 
I've put so much into him I love him so much I just want him back 
Even if we can just be friends 
He broke up with me for one of my friends and she's only dating him to get back at her bf for cheating I don't know what the fuck to do with myself anymore please I don't think I have the will to go on I've been clean from cutting for also a year now Bc of him I've been finally eating normally I've been actully happy for the first time in year I'm completely crushed I can't do this with out him....