I love to watch Sal and his best friend (Elwood the APBT) play and wrestle in the backyard. They play rough but never growl or bite. They have been buddies for 4 years so please no one tell me they are going to kill each other soon. They are never left a lone either.
You'd be amazed at how many people come on one of the Pit Bull forums I moderate, and the first question they ask is "Help! My dogs are fighting! They got along great for [insert time span here] and one just 'snapped!' I need someone to adopt one of my dogs." Its as frustrating as someone looking to place a St. Bernard that got too big and drooly, or a Golden that all of the sudden 'snapped' and started retrieving one day. That's why we try to make sure that people understand what they're getting into.
Anyway, best of luck to you and yours, and I hope things stay peachy for you.