The 15 year old plays Peter Pan in the new U.K. TV miniseries, opposite Bob Hoskins as Smee, Ifans as James Hook, and the Notting Hill star's real-life girlfriend Anna Friel as Captain Elizabeth Bonny.
Rowe reveals the couple, who began dating after growing close on set, were supportive and helped him improve his performance.
He tells Scotland's Daily Record, "I learned a lot from Rhys and Anna particularly, and Bob Hoskins is just a hilarious man to work with.
"Rhys was very supportive and was like a father figure to me. He was talking to me about acting and how to take steps to improve things, and gave me tips on how to get into character."