Yes. Wasn't there one episode in which Eddie had a date with a girl who really wanted to go out with Wally, and Eddie found out and begged off their date so she and Wally could get together? Or something nobel like that?
Can't recall the exact situation but Beaver says he always suspected that Eddie was ok but he didn't really expect to see it. Then Eddie warns him not to say anything because he doesn't want to lose his reputation.
Eddiy Haskell really was a character.