Tom was on the show, season 1, episode 4 ("Social Wife"). I went back and watched (on Hulu-- it's in the first segment or so).
It was definitely Tom, and what an ass! He stood out to me at the time for being a total jerk (he seemed to me like the kind of guy that likes to put women down to their faces, thinking it'll make them want to scramble to please him. He called Ramona's friend promiscuous, and Ramona lazy, all as part of his awesome small talk.)
At the time, Ramona did a TH saying how awful Tom and his friend were, and she literally said, "if that's what's out there, I'