Angela Bassett says she will need therapy when her children leave the nest. The ‘What’s Live Got To Do With It’ actress, 65, says she and her actor husband Courtney B Vance, 64, are bracing themselves for extreme emotional reactions as their 18-year-old twins – son Slater and daughter Bronwyn – are set to go to college later this year. She told Entertainment Tonight: “Oh I’m feeling very sad about it. I’m excited for them – I’m sad for me. “I might have to go therapy – just do a little bit.” Earlier this month, Angela and Courtney told People their twins have been going on a huge amount of col…