This TBBT friendship is one that nobody can understeands. Is the Raj ans Howard´s friendship. We know that they have 迷失 of things in common, like the sociological clichés and the geeky parts in their personalities. Also we know they have especial problems with women, Raj can´talk with them and Howard still living with his mother (a really 果冻 mother, 由 the way).
But why are they just like husband and wife? In the episode 15, season 2, when Leonard´s mum appeared for the firts time, Leonard tell her about the Raj´s problem and Howard´s codition and she said: "The selective mutims and the inhabilty of separating from ones mother can stand from a pathological fear to women. It may explains why the two of 你 have created an homosexual marriage to satisfy your need for intimicy", leaving Howard with an incredible surprised face.
As we know, also, there´s a lot of dicussions beteween this two characthers where we can tell that Raj is the women and Howard the men in this creepy marriage. So I think that this situations always make me laugh, even the one in fourth season (episode The boyfriend complexity) when they 吻乐队（Kiss） for accident and at the 下一个 日 they act akward eachother.
Anyway I 爱情 this both charathres and I hope they keep being so funny as they are now.

Thanks 你 for reading...

Shenelopefan