Amber Portwood's Ex Gary Shirley Tells All On Searching For His Biological Father

Gary Shirley wants some answers!

Last season on Teen Mom OG, the reality star dad took a paternity test to find out if Jodi, the man he's look at as a dad his whole life, was truly his biological father. Unfortunately, the results were not what they hoped for and came back negative.

In a sneak peek clip for next week's episode, Gary opens up to his ex and first baby mama, Amber Portwood, about searching for his biological dad.

Watch the clip above to hear more! Teen Mom OG airs Monday night at 9pm ET, only on MTV!