Did Howard and Jerry like one another?
It's hard to picture those two as friends. If it wasn't for them both knowing Bob, i doubt they would ever associate with each other. It seems as if Jerry had little patience for Howards naiveness. And the fact that they dated the same woman, that Howard got jealous over his son befriending Jerry, that Howard damaged Jerry's car, and that they both thought of themselves as Bob's best friend, couldn't have helped their relationship any. I wouldn't say they disliked each other, they just tolerated each other.
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