Best Friends Learn They Are Brothers

As I was reading news earlier this morning I came across an article where two men who have been best friends since they were 6 years old recently learned that they were actually brothers. I'm happy that they have had each other for most of their lives but it's a mystery to me why their Mom never told them the truth. I've included the link to the article.

https://www.rawstory.com/2017/12/friends-of-60-years-finally-find-out-they-are-biological-brothers/?utm_source=fark&utm_medium=referral&utm_campaign=im&utm_tracker=1737131x84899