United Kingdom, Sept. 15 -- Jason Isaacs feels like a "surrogate father" to his on-screen children in The White Lotus.

In the hit HBO black comedy-drama anthology series, the 62-year-old actor plays businessman Timothy Ratliff, who is married to Victoria Ratliff (Parker Posey), and they have sons Saxon (Patrick Schwarzenegger), Lochlan (Sam Nivola), and daughter Piper (Sarah Catherine Hook).

Jason told People: "I fell madly in love with Patrick and [Sam Nivola] and [Sarah Catherine Hook] as my fake kids."

The actor - who is married to actress Emma Hewitt - forgot who his real children were when his daughters Lily, 23, and Ruby, 20, flew out to Thailand to visit him on the set of The White Lotus.

Jason admitted: "When my real daughters...