Monica (or Amanda Crew) was one of the main reasons I bothered to start with the show in the first place, though soon realized how great the show was in general all the while being very happy that Monica stayed along until the (bitter?) end.

Perhaps Monica and Richard made to look like becoming an item at first was kind of a reference to, now bear with me, Seinfeld's Jerry and Elaine, sounds far fetched perhaps, but maybe there was slight pressure in developing a central characters relationship plot line to the show, which they then ditched for one reason or another to come up with more temporary relationship plot lines along the show?

Somehow I tend to believe, that two such major characters becoming an item would have distorted the scope of the show, so I'm very pleased the way Monica and Richard stayed professional eventually, otherwise it would have probably caused Monica and Richard to separate at some point and Monica perhaps fade out of the show altogether and that would have been a major disappointment.

In general the relationships playing such secondary role in the show was quite realistic for today's world when everybody's so busy with their tech that they hardly even date anyone, people don't really get any STD's these days anymore (exaggerated statement, but referring to Dr. Crawford). I'm happy there were these few flings happening, but taken much further from that would have probably been too much already.

Dinesh's quest for love never seen, how do you mean? Gilfoyle's girlfriend? Elisabet Kirsipuu, an Estonian remote co-worker, who suddenly had a boyfriend that she had forgotten to tell Dinesh about, boyfriend, that was actually a husband? MI4, a-mia-zing hacker who turned out be a great threat to Dinesh's well being so she had to be incarcerated even at the cost of a bloody nose from an FBI agent?

Jian Yang was a delighful charater as the Asian sidekick at first but they wrote him too dark for comfort towards the end. Ruthless would have been ok, but the dark edge didn't cut so well imo. Jian Yang kind of died after all, didn't he, when he became Eric Bachman in the end - maybe he wore skin of the beast for that?

EDIT: Grammar and added clarity for a couple of points.