The pair co-starred in US teen drama Dawson's Creek, which ran from 1998 to 2003.
When asked if he plans to watch Holmes in All My Sons, he told Us magazine: "Of course! Of course!"
However, he admitted that he is not in regular touch with his colleagues from the show, saying: "How often do you talk to your college friends?
"I mean, I talk to Michelle Williams every once in a while. I talk to Busy (Philipps) every once in a while."
Jackson, 30, recently moved in with girlfriend Diane Kruger in New York. He will next be seen in J.J. Abrams's new TV series Fringe.