I have found the last scene from The Avengers with Emma Peel (played by Diana Rigg) leaving with her long-lost and recently found husband.
Notice the way she told Tara King (played by Linda Thorson) the way Steed liked his tea stirred (anti-clockwise).
Also notice the appearance and demeanor of her husband as he is opens the car door for Mrs. Peel. One never sees his face but IMHO he is "exactly" like Steed.
I had forgotten this episode, but it reinforces my view that these two (Peel and Steed) were a couple (in the Biblical sense).
Observe the way Mrs. Peel looks up (while she and her husband are driving away) at the the window where Steed is standing. Her look says it all. I have had only one woman in my life given me that look and both of us knew what it meant.
This is a great clip and linked together the two characters (Mrs. Peel and Tara King) for the enjoyment of the fans. They do not do that in today's television.
Well, sit back and enjoy the clip.
"Now, take me to your leader. Or, lead me to your taker." - Emma Peel