Separated, but not forgotten. Over the weekend, the Party of Five alum took to Instagram to celebrate his middle child Miller on his 13th birthday. He shared a string of sweet pics of the boy, including action shots, hot cocoa sipping, cuddles with his siblings, selfies, baby pic throwbacks... and even an old shot with momma Kelley! Which is a BIG move considering everything! As a recap, Scott filed for divorce from Kelley over the summer after 21 years of marriage.