The power Bruce holds over Tony is slightly overwhelming. The scientist is surprised at how well he's holding himself together, all things considered; he supposes it has to do with the deep-seated need he has to take care of Tony, to make sure his needs are met, to make him happy. Seeing Tony fall apart in the best possible way because of him is one of the greatest feelings Bruce has ever experienced.

The kiss makes him groan quietly, his eyebrows knitting together as he absorbs the intensity of it. When Tony breaks away (all too soon, in Bruce's opinion), he's left glassy-eyed and flushed, reminded of the prowess that his friend possesses. The declaration of Tony's desire makes Bruce let out a strangled moan, and he leans in to steal another burning kiss before nodding shakily.

How many times had he imagined this? How many times had it been Tony doing the taking? He was the obvious choice, after all; he was aggressive where Bruce was passive. Somehow, though, this seemed right. Bruce had more control, after all. He was perhaps the person best suited to care for Tony in this way. Besides, this didn't mean they couldn't switch later on.

Swallowing, he does his best to pull himself together before asking, "Lube - where?" He's not picky about condoms - he's practically immune to everything, and he can't pass anything to Tony this way - but he does want it to be a comfortable experience.