Er... I dunno. 

Not really. Here's why.

Personally, before the reveal that Dumbledore was gay, I shipped them.

I really enjoyed the mutual respect that the pair had for each other and the way they cared for each other throughout the series. They were clearly very close in the series and it was easy to see them as friends or more. I liked the idea of Albus's humour brightening Minerva's day and Minerva occasionally surprising Albus with her own wicked sense of humour. I enjoyed the idea of Minerva being a grounding force for Albus and not being afraid to give her opinions. I liked the idea of each of them having someone else to talk to when things were too much or too lonely.

They reminded me of my grandparents. My grandma was always the more serious of the two and would often be seen reading her newspaper in her chair. She would roll her eyes when we teased her, but there was always an amused smile on her face. She took care of my grandpa and made sure that he was taken care of (he had nerve damage from an accident when he was working). My grandpa was white-haired with a beard and sparkling blue eyes. He told the best jokes and would have us kids rolling around on the ground. He was a very intelligent man who enjoyed working with his hands and coming up with 'out-there' ideas. They were very well-suited for each other and they loved each other very much, from the time when they were teenagers.

In addition to the parallel to my own grandparents, there is lots of evidence in the books showing that the two had a close relationship. We aren't just pulling a two character's names out of a hat and shoving them together, like Dumbledore and Sprout (seriously, did they even speak to each other in the series???). She is the member of the staff who interacts with Dumbledore the most and is unafraid to question his decisions (leaving Harry at the Dursleys, letting Harry compete in the Triwazard tournament).

Plus, this scene in CoS only fuels the headcanons:

Next moment, Dumbledore was backing into the dormitory, wearing a long woolly dressing gown and a nightcap. He was carrying one end of what looked like a statue. Professor McGonagall appeared a second later, carrying its feet. Together, they heaved it onto a bed.

"Get Madam Pomfrey," whispered Dumbledore, and Professor McGonagall hurried past the end of Harry's bed out of sight. Harry lay quite still, pretending to be asleep. He heard urgent voices, and then Professor McGonagall swept back into view, closely followed by Madam Pomfrey, who was pulling a cardigan on over her nightdress. He heard a sharp intake of breath.

"What happened?" Madam Pomfrey whispered to Dumbledore, bending over the statue on the bed.

"Another attack," said Dumbledore. "Minerva found him on the stairs."

"There was a bunch of grapes next to him," said Professor McGonagall. "We think he was trying to sneak up here to visit Potter."

Harry's stomach gave a horrible lurch. Slowly and carefully, he raised himself a few inches so he could look at the statue on the bed. A ray of moonlight lay across its staring face.

It was Colin Creevey. His eyes were wide and his hands were stuck up in front of him, holding his camera.

"Petrified?" whispered Madam Pomfrey.

"Yes," said Professor McGonagall. "But I shudder to think... If Albus hadn't been on the way downstairs for hot chocolate - who knows what might have--"

The three of them stared down at Colin. Then Dumbledore leaned forward and wrenched the camera out of Colin's rigid grip.

Sure...Albus just happened to be heading for hot chocolate down the same staircase as Minerva...totally :)

His only canon love interest was Gellert and nobody writes that because Gellert is in prison. It would require an impressively implausible series of events to put them together again.

Before the reveal that Albus was gay, people sometimes wrote him as dating Sprout. You can see this in a handful of older fanfics, usually done for comedy.

Molly Weasley is also a popular one in Evil!Dumbledore stories, sometimes having several of the Weasley's actually being Dumbledore's children.

Another reason why is that they likely want to pair McGonagall with someone but can't think of anyone who actually interacted with her. Same deal with Dumbledore. So they just push them together so they can end their story with everyone having found love.

You often find Ron X Luna Neville X Luna or Ron X Lavender in these fics too, especially if they paired Harry with someone who isn't Ginny. The author will just take anyone who isn't paired and put them with the most compatible named character.

I personally see them as good friends. 

There are many scenes in the series that point to a very close relationship between these two professors. The way they speak to each other in the very first chapter of book one, for example, indicates that they are close longtime friends, and it's very easy to read a bit of flirtation between the lines. Then there is the "hot chocolate inconsistency" many shippers point to, in which Albus and Minerva give the school nurse a slightly confusing account of how they ended up carrying a petrified student to the Infirmary late one evening, wearing only their nightclothes. Minerva is, I believe, the only person who calls Albus by his first name. Throughout the series, she demonstrates deep loyalty to and admiration for him, telling him he's "too noble" too use dark magic, for example, or insisting that he did not make a mistake enchanting the Goblet of Fire. Her loyalty also places her in open defiance of the Ministry in book five. He, for his part, trusts her implicitly, as evidenced by the autonomy with which she generally operates and, in particular, the scene in his office in book 5, when he is forced to flee.

Now, I can hear some of you saying, "But they're so old!" or "Isn't he, like, eighty years older than she is?" While J. K. Rowling hasn't elaborated upon age in the Wizarding world other than to say that witches and wizards have a much greater life expectancy than muggles, one can extrapolate, based upon the fact that Albus' hair was only beginning to turn white when he was around one hundred, and that he can easily duel with Voldemort fifty years later, that magical ability seems to slow the ageing process considerably. From there it's not too far a jump to figure that Minerva, at age seventy, would look the Muggle equivalent of around forty, while Albus would appear a Muggle seventy-something. But even if it turns out that magic merely extends the elder years, and they look as old as their Muggle equivalents, it doesn't matter. The saying "Snow on the roof, fire in the furnace," applies here regardless of appearance. Love and desire do not disappear once one passes the age of thirty, despite what Hollywood would have us believe.

Writing Albus/Minerva is not an easy task. Unlike Severus/Hermione, which lends itself quite easily to the Regency romance genre, from which fanfiction authors can draw inspiration, there are virtually no romances about older couples in bookstores or libraries. Some authors get around this problem by setting their stories fifty years before the series, writing a young, feisty Minerva and an older troubled-by-Grindelwald Albus, effectively shoe-horning the characters into the Regency romance mold. However, those who like to write or read stories that are canonically plausible feel that Minerva and Albus could not have been a couple until after the first chapter of the first book – there was just too much she didn't know at that point. This means writing them as they are presented in the books – a middle-aged woman and an elderly man. There are no literary patterns to follow for a writer who chooses this route, yet the very best examples of fanfiction written with this pairing have bravely ventured into this new territory with beautiful results. These stories are about adults with many years of life experience behind them, complete with baggage, whose discovery of one another is all the more poignant because they know what's at stake.

Rating: 3/10. 

Best friends, as seen below. 

Lol. Snape's like Oh, why do they have to do this every single bloody time?