Michael handled his relationship with Holly better than any other office romance in the show.

He was WAY more mature in his relationship with her than any other couple in the office.

Think about it, he restrains so much from his childish instincts with her, even doesn’t say “that’s what she said” in one episode. He carefully thoughtout their proposal. He denied her in the break room, more like interrupted but still, he wanted their proposal to be perfect.

  Pam and Roy were engaged for over 3 years

  Angela cheated with Dwight while engaged to Andy

  Andy left Erin on a boat for 3 months

  Erin dumped Gabe in front of everyone at the 
  Dundies

  Gabe looks like a transvestite

  Ryan has major commitment issues (aka he cheats 
  all the time)

  Kelly cheats on Ryan a lot

  Holly was going to propose to Michael in a break 
  room right after saying her father isn’t doing well,  
  trying to pressure him into it

And the list goes on and on. Think of any character, think about their relationships. None of them handle any situation or really even know how to be in a relationship as well as Michael. Even with Jan he was much more rational than her and was a better partner than her to him. Take the money situation for example. She was way overspending his money then tried to blame him for them being broke when she obviously caused it.

Michael’s intelligence in comparison to other characters is honestly fascinating. Everyone thinks he’s an idiot, but then when you really look at the results of his actions you understand his logic.

Michael even is good with the guys who are with the person he wants, except that time he started shouting at AJ in the conference room. But besides that like at the picnic with AJ he handles the whole situation very well, then he admits that their relationship may take a long time but eventually “it’ll be perfect.” And it was in the end.

^{Edit: Grammar}