This gives you just a little bit more detail and actually it sets the story- when i was writing this I didn't give dates as I wasn't sure when I wanted to set it but well I have now. I have to write the rest of it, so there will be no updates for a while.
Two years passed before Minerva and Albus had Bobbie. She was doted on by everyone. When Alec arrived in 1960, life seemed idyllic for the little family. Minerva was made head of Gryffindor in 1962 after Albus pushing the board of governors for nearly 10 years. Maggie came by surprise in 1967 as did the increase in muggle hate crimes. Suddenly Minerva found her husband away and a secret order was founded. She carried on though and by 1972 she was not just in charge of Hogwarts more than Albus but also leading more order of the phoenix meetings than she cared for.
It was at one of these meetings that Alastor Moody cornered her after drinking one too many fire whiskeys, proclaimed his love for her and then began to kiss her before she had even had a chance to breathe or summon her wand from the other side of the room. Unbeknownst to Minerva that Alastor would later tell a friend who would then tell Horace Slughorn, who would take great delight in telling the great Albus Dumbledore that his faithful wife had cheated on him with his best friend. Albus however did not believe it until his wife confronted him about a letter.
In this letter a crazed fan would say that she and Albus had meet in the three broomsticks and proceeded to have an affair. The woman described herself in case Albus could not remember her after his many encounters with women. Minerva unbelieving of it at first was then shocked when she went to London to grab a few presents for Poppy's birthday. She saw Albus enter the leaky cauldron with a woman that matched the description in the letter. She went back to Hogwarts and when her husband arrived home she confronted him.
"Who is she?"
"Hello to you too Minerva, what on earth are babbling about?" He said it jokingly but he could tell by the way she stood in the shadows that something was wrong. "What's wrong darling? You usually come give me a kiss when I arrive home."
"Who was the woman you went into the leaky cauldron with? Or should I say what was she doing with you?"
"She was merely an acquaintance that's all."
"An Acquaintance? Then why did she write this letter?"
"What?!"
"This letter, where she says she had never felt so alive when you made love to her and it goes on- she says she was the blonde you met at the three broomsticks."
"Minerva, I swear it never happened. You know better than anyone what some of the letters I receive are like."
"That still doesn't what you were doing with the woman in the leaky cauldron."
"Are you accusing me of having an affair?"
"Oh god Albus, you can be so slow sometimes." She had come out of the shadows and he could see hers were red as if she had been crying. "Of course that's what I'm implying!"
"Minerva how can you, after what I've heard you've done and I've not…." He was suddenly getting very angry.
"What? What have I done that's even remotely close to an affair?"
"Alastor." She crumpled when she heard that word.
"I…I… I didn't."
"Oh but I think you did. He even said you did. So what was it exactly because what he said happened, well you would have had to have been willing to…"
"No, he kissed me that was all."
"That was all?" Albus slammed his hand down hard on the mantle causing the various photographs to jump. "I trusted you and you betrayed me with my best friend!"
"Well you went with a woman into a pub and you won't tell me what you did. If you were innocent you would tell me."
"It was nothing but you…you betrayed our love."
"He kissed me Albus…. Look take my memories."
"No. I can't trust you, he told them you did more and you've embarrassed me Minerva, I… I can't even…look at you, you disgust me."
"Right that's it. I…I I want a divorce."
"What?"
"You heard me- we can't trust each other now and I can't be married to you if… if you would think I would do that."
"Fine. Have your divorce, I hope you're happy." He stormed out slamming the door as Minerva broke down sobbing in front of the fire. She got up and went to her office and sat there before she removed the chain that held her rings and put it into her top desk drawer. She put all the remnants of her marriage there too.
Albus sank into his chair and broke down. He obliterated the mirrors around him, the portraits fleeing until he had calmed down. When one said her name he very nearly hexed the frame. It was only Faukes soothing song that stopped him. He banished all traces of his marriage to the room of requirement and just sat there.
