Brian Austin Green was convinced he’d receive a response when he texted Luke Perry the day after he died. The 50-year-old actor “couldn’t really process” the news when he found out his ‘Beverly Hills, 90210’ co-star had died in March 2019 after suffering a massive stroke at the age of 52 and part of him thought his pal was just “hiding somewhere”. Speaking on ‘Getting Grilled with Curtis Stone’, Brian said: “There was a part of me that couldn’t really process that that was real. “I texted him the day after he passed. Just because there was a part of me that was like, ‘No, he’s gonna answer bac…