Scout graduated from Penn State University in 1996. He then went on to exchange vows with his longtime partner, Bill Horn, on May 23, 2009. Scout's longtime friend Tori Spelling became an ordained minister to officiate his commitment ceremony to Bill Horn. Scout and Bill adopted a daughter, Simone Lynn Masterson-Horn. Simone was born in June 2010. Scout is a surrogate uncle to Tori Spelling's three children, Liam, Stella and Hattie. Scout and Bill have been featured on the hit series, Tori & Dean: Home Sweet Hollywood where they are known as "The Guncles".