Amber's Brother Shawn Questions Andrew Glennon's Future With Portwood

Nobody messes with his sister!

In a sneak peek clip for Teen Mom OG, Amber Portwood's brother, Shawn Portwood, steps into the protective sibling role and questions her new boyfriend and baby daddy, Andrew Glennon.

Shawn asked about any secrets Andrew could be hiding, if he has watched Amber on the reality television show, and of course...if he has any other kids!

Watch the clip above! Teen Mom OG airs Monday nights at 9pm ET, only on MTV!