An old man gave me marital advise he said, "do you want to be right, or do you want to be happy?"

Under Colorado fair housing law, it is illegal for any mortgage lender to discriminate against any person in the terms, conditions, or privileges pertaining to any housing because of disability, race, creed, color, sex, sexual orientation (including transgender status), marital status, familial status, religion, national origin, or ancestry or source of income.If she meets your requirements in every way as you stated, you can't deny her.

You should ask an attorney about liability and how to limit it based on marital property.

This is made under state domestic relations law (including community property law).Translating lawyer-to-English, this means that the state’s family law regulations MAY allow transfer of property from one spouse to another as a marital property right.

Not that I'm necessarily concerned about marital issues, more of a way to simplify the process.  

In the divorce there will be a pretty clear process and you'll deal with all the marital assets, this one included. 

In the last Congress, a bill (H.R. 6500) was introduced by Representative Jerry Nadler (D-NY) to amend the Fair Housing Act to prohibit discrimination on the basis of sexual orientation, gender identity, source of income or marital status.

@Robert WallaceThis really needs to be discussed and planned out with someone that knows your entire financial situation, age, marital status, other incomes etc.

I'm wondering what might signify, if anything.

If so then they are marital assets, most likely and she is entitled to half the equity.