Hello Strike2: Welcome to Psych Central.

At the beginning of your post, you wrote you were here: "to try and gain some perspective on what happened". I don't think that is something I can really offer you. However, since this is your first post, I thought I would at least welcome you. Perhaps there will be other PC members who will feel they have some insights they can share regarding what occurred.
In the meantime, here are links to 6 articles, from Psych Central's archives, that (hopefully) may be of some help:
How To Deal With Depression After Divorce: 5 Actionable Tips
7 Ways to Beat Depression After a Divorce
5 Helpful Ways to Cope With Post-Divorce Depression
The Differences in Divorce for Men and Women
10 Tips for Navigating Heartbreak
https://psychcentral.com/blog/growth...dium=popular17
I hope you find PC to be of benefit.