Welcome Hondo,
You are most definitely not alone.
Everyone here has someone in their lives with BPD or BPD traits, we all get it. I'm on this site because my Significant Other (SO) has an undiagnosed BPD ex-wife (uBPDxw) and they share 2 daughters. I discovered BPD by Googling Chronic Lying and in our case like yours the shoe fit. Then I hit my Public Library and started reading. I landed here a few years later. The members here are really great for support and ideas and the site has a lot of tools and information.
Can you give us an idea about where things stand with your marriage currently? It sounds like you have been separated the last 5 years and you are both attending Therapy. How old are your kids? What does custody look like? What in particular are you struggling with most?
I'm glad you decided to jump in an post and no you are NOT CRAZY!

Take Care,
Panda39