The morning after the wedding day dawned. In the Blue room in the castle of Canterlot, he and Twilight were sleeping in the bed, after having had their wedding night. Twilight sleep embraced to her husband with her head on his chest. Both had a smile on their face, even bigger than the one when they spent their first night together.
The sun rays came into the room and made Blue wake. When he opened his eyes, he looked at Twilight and his smile widened. He was immensely happy to be married to the mare of a life. They were now one and one only. He passed his hoof through her mane and gave her a kiss on her forehead. He just wanted to stay in bed with her.
It was then that somepony started knocking on the bedroom door. What a bummer, Blue thought, wondering who could be interrupting his first morning with his wife. Struggling to not wake up Twilight, Blue stood up and walked to the door, opening it a little. It was one of the guards, who told him, making him a salute:
"Good morning, Captain. I'm terribly sorry for interrupt you and Princess Twilight, but I have an urgent message from Princess Celestia to you, sir."
"A message?" asked Blue, wondering what could be that message. "What message?"
"Princess Celestia needs to see you as soon as possible in the throne room" the guard replied.
"But now?"
"Yes, sir."
Blue sighed. Only something like that to ruin his absolute happiness. But what could be so urgent for the Princess Celestia call him?
"Very well, say to Princess Celestia I'm coming" he told to the guard.
"Very well, sir" the guard said, moving away.
Blue closed the door, taking a deep breath and then went to take a quick shower, arranging his coat and his mane. After leaving the bathroom, now presentable, he approach Twilight and gave her a kiss on the cheek, saying:
"I love you."
And after that, he headed to the door and left. He drove up to the throne room and, upon entering there, found the Princess Celestia and Princess Luna waiting for him.
"You wanted to see me, Princess Celestia?" Blue asked, approaching and making a bow.
"Blue, you don't have to bow" Celestia said. "Now, you're a prince."
"I'm sorry, princess, but my code as Captain contradicts my new status" Blue replied. "I will take some time to get used to it. What do you want to talk with me."
"It turns out that my sister and I discovered something truly important" Luna said. "Something with gigantic proportions."
By the way Luna spoke, it seemed to be something quite important.
"But what I have to do with that?" Blue asked.
"We need to ask you a favor" Celestia said. "I know that's asking a lot, especially now that you just got married. But, as Shining Armor returned to the Crystal Empire with Princess Cadance, and taking into account the importance of this, we have our only choice."
There was a pause and then Celestia said:
"We have a mission for you."
Twilight started to wake up and opened her eyes, expecting to find Blue at her side. However, she found herself alone in the bed. But where would have Blue gone?"
It was then that the bedroom door opened and Blue came in, closing it as soon as he entered.
"But where did you go?" Twilight asked, sitting on the bed. "I woke up and you weren't here."
But Blue didn't answer her, sitting just on the side of the bed. Twilight, realizing something was wrong, advanced in bed to Blue and put her forelegs around his neck, kissed his cheek and then asked:
"Come on, tell me, what's wrong?"
"I haven't very cheerful news, Twilight" Blue replied.
Upon hearing that, Twilight moved to stand beside her husband and asked, somewhat seriously:
"What news?"
"I have a mission, Twilight."
"A mission?" Twilight asked, seriously. "But what mission?"
"Princess Celestia and Princess Luna asked me to maintain confidentiality about this" Blue answered. "I can't tell you."
"But I thought there were no secrets between us, Blue" Twilight protested.
"And there were no secrets” Blue replied. “Why do you think I'm telling you about this. I can't lie to you. But I can assure you that it's pretty important."
"And can't another guard go in your place?"
"Well, Shining could, but he returned to the Crystal Empire and this mission is urgent."
Despite not liking the idea of being away from Blue, shortly after getting married, Twilight understood his duty as Captain of the Royal Guard.
"And when are you leaving?" Twilight asked.
"Tonight" Blue said.
"What?!" Twilight asked. "But today is our first day as a married couple!"
"I know, my dear, but it will be for a short time" Blue reassured. "It's just a reconnaissance mission. I’ll be back before you know it, and as soon as we can, we will go to our honeymoon."
Listening Blue saying those words, Twilight’s frustration calmed down, she smiled and said:
"I will wait for you, but I hope it doesn't take too long."
"It won't be long, I promise" Blue said.
And then the two hugged and nuzzled each other.
They spent together that day, until, when the day began to finish, they had to say goodbye to each other. At the station, the train was ready to go and Blue, with his saddlebags put, embraced Twilight and when they finish the embrace, Blue said:
"I will try to dispatch this mission as fast as I can. It won’t take long until we see each other.”
"I hope so" Twilight said. "I'll miss you."
There was a whistle coming from the train and they saw it was time. They exchanged a kiss and then Blue said:
"Goodbye, my love"
"Goodbye" Twilight said.
Blue headed to the train and, before entering, he looked at Twilight who was smiling and waving and he returned the smile and the wave. He get in the train and, shortly after, it began pulling out, starting to move away.
Seeing the train moving away, Twilight couldn't resist drop a tear. She knew it would be for a short time, but it cost her be separated from Blue, just when they get married. But she recomposed herself, knowing that she would have to face all the time that she would be away from Blue with all the courage and she knew the desire of seeing her great love would give her encouragement for that.
The End