There may be multiple sources for this, but the first that came to mind was this Nancy Grace interview with Julie Rowe. Now, we have to take everything she says with a grain of salt but I don't see where Julie lying about this would be profitable for her.
Around 1:08 Rowe tells Nancy that Chad told Melanie G. they were married in a past life. Prior to this she (Julie) states that Chad would hit on her and also told her she was a past wife. I doubt this is the only instance where she has claimed this.
Consider that Tammy was taking Zoloft, and Chad was with Julie as a "business partner" of sorts (their books) for a long time before he met Lori. MOO Tammy suspected he was cheating with Julie and became depressed but didn't have the wherewithal to confront Chad and/or leave for reasons we can only speculate. 2 + 2 = 4. MOO.
I wouldn't say Chad is
hideous or anything but how this guy manages to pull this many women into his circle, spirituality or not, is beyond me.