<human>: Give me the gist of the text in a nutshell

I've (F25) been in a relationship since I was 16. One was for 6 years, the next for almost 3, and they happened quite literally back to back. Before I was 16, I was a moody teenage nerd, and before that a regular kid. Basically, I have never been single, or alone, or operated without a partner in everything.

I just got dumped out of the blue. My relationship was seemingly perfect, but a few days ago, my ex decided he'd rather be alone than in love. 

I'm doing what I'm supposed to. I went to a museum, painted a bookshelf, talked to friends and family, but in the in-between moments when it's truly just me and my thoughts, I feel... like I'm dying. When I wake up I feel faced with an immovable object. I don't know how to see past it. 

I don't know. I'm not up for months of this. Thoughts or advice?
<bot>: Got dumped, leaving me single for the first time ever at 25. I've always come in twos. How do I do this?