My fiancé and I both purchased the Deluxe(keep everything separate) but only have one computer and it won't let use install two versions on the same computer, what to do?

You can each use the one program that is loaded on the computer as it will do multiple returns.

You can file up to 5 Federal returns free and the state e-file is extra.

Return the one software you have as you are correct only one can be loaded on the computer.