Constant mood shifts

[SD2007]

I've been slightly going crazy since my girlfriend broke up with me 2 months ago. Every Morning I wake up just feeling hopeless without her and for the rest of the day I go from being super happy one minute to pure sadness the next and it constantly changes like that. I never was able to get my hand on SN or anything like that so I never had a proper attempt. I did cut sometimes as a "stress reliver" but after going too deep a few weeks ago (and thinking I went through a vein there was so much blood) I haven't until tonight. I want her back so bad but I know she won't be coming back so I know deep down I need to stop these feelings of love I still have for her but I can't. I've pushed all of my family away and barely interact with them which I feel so bad for doing but I just can't speak to anyone except my friends (or customers at my job) without being near tears and I don't know why. I feel like I failed them all. I want to get past all these bad feelings but I just don't know what to do. If anyone wants to talk or anything my discord is sonnymedia. I hope you all are having a good night/day

(also another bit of info is I'm moving to the city where my ex lives in less than a month for university so that's great right..)