“Pretty In Pink” Star Just Dropped Some HUGE News About a New Movie His Son Is In

“You said you couldn't be with someone who didn't believe in you. Well, I believed in you. I just didn't believe in me. I love you... always.” -- Blane, “Pretty in Pink”

That quote never gets old!

From “Pretty in Pink” to “St. Elmo’s Fire,” actor Andrew McCarthy was every girls’ dream date in the 80s and 90s -- now his 15-year-old son has caught the acting bug and guess who’s playing his mother in an upcoming movie…

MOLLY RINGWALD!

“Yea, small world,” says Andrew.

WATCH: Our Totally Awesome 80s Show with the Original MTV VJs

He was a bit tight-lipped on the details of what the film is about, but we can only image how EPIC it’s going to be!

Some details he DID share, however, are about his new book called “Just Fly Away.” It’s written in the eyes of a 15-year-old girl who discovers a family secret -- she has a sibling across town she never knew about.

“Since I’ve been talking about the book, I’ve met two dozen people who have sort of secret siblings and parents who weren’t really there parents,” says Andrew. “All this stuff comes out, it’s crazy!”

WATCH: 80s Long Hair Makeover

Check out the video above to hear more about his new novel and the surprising (or maybe not-so-surprising) person he’d cast as the main character in a movie for it!

WATCH: 90210's Shenae Grimes