I'm having trouble choosing a peer recommender.

I started and run my own company and don't have any true work peers! I either hired contractors or collaborated for brief projects with people abroad (I'm considering asking them). The one person who has worked recently and closely with me (we've done projects together) is my girlfriend!

At first I thought it was completely inappropriate to have a girlfriend write a peer recommendation. But I found undergrad schools that say it's fine. Now I'm confused.

She's certainly in a position to know and evaluate me as she's seen me in myriad situations from fantastic to difficult.

Any thoughts?