Dirt Bike Rentals in the DFW

Guys, I'm at a loss here. It's my girlfriends birthday March 12th and I'm trying to find some dirt bikes to rent for a day. She's always wanted to do it and I was thinking it would be a cool thing to do for her birthday. I've ridden before and she has once before so we're not total noobs and I'm not planning on doing anything crazy. There is a HUGE off road park/ranch in Bridgeport that I was planning on going to. I've been there with the Taco and it would be great for touring on some bikes.

Long story short, I can't find ANYWHERE that rents them! I've found 4wheelers for rent like $100 a day but nothing with two wheels. Do any of you know someplace I could go to rent some? I'm failing miserably at getting this together.

 

Really need some help guys....anyone know?