Nothing like a pal to help you get through difficult times!
While Rob never mentions Zac's name, we can't help but think it's his way of showing public support for his troubled friend.
A thought: if you only find out a person has been to rehab weeks or months after they got out, they're probably serious about recovery.
— Rob Lowe (@RobLowe) September 18, 2013
The 49-year-old actor recently celebrated 23 years of sobriety earlier this spring, so maybe he'll act as a sober companion to the Parkland actor!
Whatever happens, we're glad people are there to support Zac's mission to living a healthier life!
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[Image via IZZY/WENN.]