Am I entitled to ask for some sort of financial recompense?

I left my partner of 22 years, nearly four years ago. He had been a serial cheater and had met someone he wanted to marry and he asked me to move out. I did and took very little with me when I left. I didn't ask for and division of assets or for financial support. I was a mess and just wanted to get out.

Now I'm healthier and able to think straight, I'm wondering if I'm able to get some sort of financial recompense at this time or if it's too late? In order to start over, I went into a deep hole of debt and am struggling with it.

We were common-law and when he moved in, he was a student with nothing. All assets were mine, everything. He brought nothing with him. When I left it was the same, everything was mine, all he purchased was a desk, chair, computer and bicycles. I even purchased most of his clothing. So in effect, when I left, I left behind all of MY things.

Am I entitled to ask for some sort of financial recompense?