Aaron, who starred alongside the actress in The Blind Side, explained that he was starstruck when he first met her.
"I've been a fan of hers for years," he told People. "I was in love with her for years! So I found out she was married and I was like, 'Okay, I'll settle for friendship'."
Aaron continued: "She's just awesome. She's the most caring, loving individual that I know. She's one of the most beautiful women inside and out that anybody can have the pleasure of knowing, meeting and working with, and I felt so honoured to be in that position."
He also praised Bullock for her work ethic and explained that she hadn't let fame change her.
"She stays professional as well as not letting it get to her head," he said. "She's real serious and humble about what she does, but she's also a humble individual. She's not up in the clouds, unreachable, you can't talk to her, you can't approach her.
"Anybody can speak to her and she'll speak to them. She'll love and care for anybody and respect anybody, and I love her for that. She's just real."
> Click here to see the UK trailer for The Blind Side