That's definitely a rough run man.
Without trying to sound like a cliche, things do tend to get better after a huge drop like that.
Your first serious relationship is going to hurt like a bitch when it ends and it's the same for everyone.
It's all you know so it's all you can imagine, but trust me when I say the ache slows down and fades away with time.
Which sounds like bullshit right now, I know.
Just do me a favour and keep fighting through all the bullshit you're dealing with right now.
If you don't come out the other side a stronger man you can come on here and call me an asshole.