They ended up together on Dawson's Creek, and they remain close to this day.
Appearing on George Stroumboulopoulos Tonight this week, the Fringe star was asked if he heard from his former costar after her divorce from Tom Cruise and he appeared to shock the host with his response: yes!
How did it go?
“Like any old friend... It was like, ‘Oh, hi how are ya? What’s going on?’ ‘I had a kid’ ‘Yeah, that’s crazy, I heard!’” Jackson said. "It was very nice."
The actor also touched on a surprising visit from his father, someone he hadn't seen in over 20 years at the time.
Click Play on the video above to hear about that and a lot more.