The actor opened up to Nightlineabout his passionate union with the mega star, which lasted from 2000 to 2003.

Thorton admitted that he "blew it" with Jolie, explaining, "I didn't think I was good enough for her. She has one way she wanted to live her life and I had another way to live mine and I was just too insecure."

Reflecting on the marriage, Thorton said he "did feel like the Phantom of the Opera hiding in the catacombs. People have actually said that I didn't deserve to be with her."

Giving a hint as to what led to their demise, he added, "When you're in a relationship, any two celebrities or whatever, you know, I think that puts on a lot of pressure. When Angie and I got married, during that time, I was more famous than she was to start with and then she becomes this big thing, it's hard in these relationships."

• Even though Jolie has six children now with fiance Brad Pitt, Billy Bob says they are still good friends. He said, "We had a great time together. We had a great marriage and I chickened out because I didn't feel good enough. That's all that happened. It was no big deal, we never hated each other."

QUESTIONS FOR YOU TO PONDER - AND ANSWER - USING YOUR FACEBOOK LOGIN BELOW...

• Do you think that Billy Bob was jealous of Angelina's fame when they were together?
• Do you think that at the time of the split Billy Bob thought that he "blew it" with Angelina -- or is that only in retrospect?
• Can a marriage ever end without anger?
• If Brad and Angelina ever split -- who do you think will have ended it?