NeNe Leakes Says She's Okay with Cheating If It's Done Respectfully

NeNe Leakes says she's okay with letting a little infidelity fly, but clarifies ... if you're gonna cheat, at least do it with some class. Yup, you heard right -- 'RHOA' star Nene explains she's all about the "what you don't know, won't hurt you"…