But House had never stopped loving Stacy and her return in “Three Stories” and (especially) in “Honeymoon” dredges up House’s long buried and extremely conflicted emotions. His immediate reaction towards her is sarcasm and anger (always House’s fallback position) but he is slowly drawn back to her, familiar banter mixing with anger, resentment, and bitterness for her and for Stacy’s husband.
For me, House’s tipping point comes during the rooftop scene in “Honeymoon.” Confessing to Stacy that he’s at a loss regarding Mark, House comforts her in an embrace that strongly suggests House’s five-plus years of longing for her. His embrace, the confession, his reluctance to let her go — all completely unguarded — all signal that he still harbors very powerful feelings for her. It’s as shocking as it is revealing that he would make himself so vulnerable to her.
Stacy also continues to have feelings for House, although, as she confesses at the end of “Honeymoon,” she cannot be with him. She rejects him because she felt alone in their relationship. (Well, that and the fact that she’s now married.) Although Stacy lets him down as gently as she can (from her point of view), House is clearly pretty devastated, as evidenced by the subdued reaction to her words. And I think Stacy misreads how deeply House still feels for her. (Although House doesn’t really help her understand either.)
But interestingly enough, Cameron does not misread the signals he’s sending out. She reads them loud and clear. Having mistakenly believed that House is simply “too screwed up” to love anyone, she observes House throughout the case. She realizes that House is capable of great love (and selfless love). She (rather cruelly, I thought) tells him, “I’m happy for you,” knowing that House’s love for Stacy (at this point, anyway) is strictly unrequited.
House’s feigned indifference towards Stacy’s return to the hospital at the end of “Honeymoon is contradicted by his actions. In one of the series' most poignant scenes, House desperately tries to erase time and circumstance, trying to walk normally, without the cane. Perhaps if he can, he will be “whole” enough to win back Stacy’s affection. (I think that’s what’s going on in House’s mind here.)
Of course he fails, collapsing in pain and frustration. What an interesting bit of continuity that in season five’s “The Itch,” House’s impulsive, resolute decision to visit Cuddy includes leaving his cane at home — despite what it does to his mobility, and (most likely) pain level.