<human>: Summarize the given text in a few sentences.

I've had an on-off relationship with my partner for 12 years. We've been married for 5 years but even had an 18 month break in the middle of that. The on-off was always due to long-distance stress and bad luck.

That break apart in the middle of my marriage was the most miserable year of my life, I cut contact with him, I got a new job, moved to a new place, saw my friends, exercised, dated and did a full year of therapy, I did everything I could think of to cheer myself up but I was never happy, I felt empty and lost. When he approached me to get back together, I made sure he was deadly serious and willing to change and then jumped right in. Now it's all falling apart again.

Next week I expect he will be diagnosed with bipolar disorder which he has been treating with pot and alcohol. I was willing to stand by him and forgive him for being a shitty husband until I realized just how horribly he really has been treating me and I realized I have been a prisoner to his moods.

I need advice how to get over this guy. He's been a stable figure in my life for longer than anyone. I'm pretty sure I'm addicted to him. How do you get over someone you thought was your soulmate? Worse, how do you get over a person that you gave everything to and who decided to treat you like shit in return?
<bot>: How do you get over someone who has been the biggest part of your life for so long, when you didn't do anything wrong!?