He also was in another 1960s show - Here Come the Brides
. What can I say, I was 10. Anyway there were two accredited teen heart-throbs on that show (Bobby Sherman and David Soul), but personally I had a crush on Mark Lenard's character, Aaron Stempel, even though he was supposed to be sort of a bad guy. I remember recognizing him from Trek (as the unnamed Romulan), of course.
I was either a very weird girl or maybe I just had sophisticated taste? Or both.