Board Thread:General Discussion/@comment-26443838-20150806161533/@comment-4689777-20150810131728

Maybe he just snooped round his mother's office and eventually found all those adoption files from the 3x09 flashbacks, assuming she didn't throw them away (she probably wouldn't remember reading them because of the memory potion debacle). Then with that info whosyourmomma.com took it from there?