Reese Witherspoon & Ex Ryan Phillippe REUNITE For Son Deacon

Ryan Phillippe's intentions are anything but cruel.

The I Know What You Did Last Summer alum marked a major milestone in his ongoing sobriety journey on Sept. 13, sharing that this is "officially the longest I've gone since I was a teen without some kind of nicotine or marijuana in my system (among other things)."

"Feeling thankful for the freedom that comes with breaking addictions and dependency on substance," he wrote on Instagram alongside a mirror selfie, which showed him rocking a sleeveless white tee, aviator shades and Laval crossbody shoulder bag with a toothpick in his mouth. "Sobriety, clarity, and spiritual connectedness feels real goo…