The tension between them reaches a boiling point following the aftermath of Cuddy’s adoption. House’s attempts to "help" her—often by being a jerk—highlight his inability to communicate care in a healthy way.
Some of the bickering between the fellows feels like filler compared to the weight of the Cuddy/House dynamic. House_-_S05E14_-_The_Greater_Good
House is disgusted by Dana’s choice, viewing her abandonment of "important" work for "frivolous" happiness as an insult to talent. The tension between them reaches a boiling point