Can I ask my joint venture partner not to call my private lender?

[Jim Pasta]

I have a great joint venture partner I plan to buy a property with, using a good private money lender I know. While I trust the joint venture partner, I would like to have them sign an agreement stating they won't solicit the lender for other flips without me being involved in the deal. Is this a common practice and if so does anyone have a sample contract I could view?