In most states, joint/marital income can be used.

You can join others in joint ventures, you can be a limited partner in syndications, or you can invest in REITs.

@James Nix, joint compound (or spackle) and a small 3-4" drywall knife like this:https://www.lowes.com/pd/Warner-4-in-Steel-Taping-Knife/5013...Here is a video that will help you do a decent job:

We are 50/50 partners and just took title to the property as Joint Tenants. 

You could however make some type of joint venture agreement between you and it could stay in his name.

Or the LLC is a joint investment of John, Julie, Bob and Mike right?

Once you're sure you are on the same page, put it in WRITING in something like a joint venture agreement and sign it together with a witness - you may want to have an attorney do this for you.

I advise having a call with securities attorney or fund attorney to see what kind of fund might suit your needs.If it's 10 investors and lower, you could even just do a joint-venture with promissory note.

This is not legal advice, just friendly information.For a one-time deal, it's pretty common to simply do a joint venture between two LLCs.

It's a joint venture, however some percent of a deal is better than 100% of no deal.