If you are married and financially everything has been separate the entire marriage, all assets, home, cars, bank accounts etc..

Just remember it can be a messy ordeal, and is like a marriage. 

.- I signed a marriage waiver when closing on the current duplex we currently own and occupy.

One was a long marriage (over 10 years) with kids involved. 

*not having a tenant I think it's because I've already put my family at big risk (it went well though) and now I'm scared to ruin my marriage and everything I've built.

You are married to the man so you should have a good idea what motivates him.Other than that it is very difficult to start investing without having both people in a marriage on the same page.  

I learned that over the ages, marriage was more of a business arrangement than for any other reason, this makes sense to me on some levels.Time is of the essence in deal-making.  

What's important to remember (just like in marriage) is not "to jump in bed on the first night!"

It's where our marriage started, where our 1st child was born and where we decided that we will make RE our careers!

Also, make sure you and your wife are both prepared to live in a construction zone - it's tough on marriages sometimes.