Both of you made me think of the symbolism of these two scenes through your posts. So this is dedicated to you. (Just-hilson-things, thank you for the gif above.)
Doors have great symbolic significance in literature. They symbolize transitions, passageways, and barriers to cross. They have been used as metaphors with great flourish (e.g., he opened the door of my heart).
Katie Jacobs, one of the co-producers of House, once said in an interview that the first image above shows “Wilson taking refuge in House” after the breakdown of his third marriage. It dovetails very nicely to a comment House once made to Wilson that his only successful relationship was with him.
The second image of Wilson at House’s doorstep in “Holding On” is even more deeply symbolic. He doesn’t enter through the door until he makes peace with House about the chemo. After House rejects Wilson’s offer for more chemo, Wilson asks whether it is ok that they have only five months left. House says no, it is not, but it was better than nothing. Then Wilson says, “Um, how do we start?” After awkwardly looking here and there, House replies somewhat bashfully, “I am not gonna tell you I love you.” A wordless message passes between the two with a look and then Wilson enters through the door with the words, “Thank God. Are there any Oreos?” House stares after Wilson and the door closes in slow motion, keeping us, the viewers, out of what is happening behind it between House and Wilson. This scene is a marked contrast to the opening scene of the same episode where House and Wilson disagree about another round of chemo at House’s door and then Wilson leaves without entering House’s apartment.
I see this second door scene as a major point of transition in the relationship between House and Wilson. House’s words at the door conveyed the opposite message than their literal meaning and Wilson acknowledged the sentiment, entered the apartment through the open door, and went in search of Oreos, a symbol of their love. To me, this was when Hilson became canon, though their love was on display everywhere in The C-Word.
Yes, @silvie111, doors were used as a romantic symbol in House.
Yes, @just-hilson-things, as always, all the steps House and Wilson take ultimately lead them back to each other.