Family Affair (1966)

S1E28 What Did You Do in the West, Uncle?

Bill brings the twins to the rodeo, where he runs into his old buddy Gabe. Excited about the idea of having a real cowboy around, he invites Gabe to stay with them. The twins are captivated by Gabe and quickly take to him. This leads Bill to feel a bit overshadowed, worried that the twins might prefer Gabe over him. However, the twins reassure Bill that he will always be their number one, no matter what.