Only a few people know when Agent Hill's birthday is.
Director Fury knows, he makes it a point to know everything about Agent Hill.
The Avengers team knows, Stark hacked into the personnel files and looked up everyone's birthday so he could put it on some big calendar and then immediately forgot every single date, but the rest of the team still checks the birthday calendar.
An agent or two knows, simply from being next to her when someone on the Avengers team wishes her a happy birthday.
Agent knows, someone was rude enough to place a small handmade party hat on his head that morning.
And of course Coulson knows, he won't stop texting her about it while he's away on his mission.
Did you like Agent's hat? He obviously didn't.
Do you want me to pick up something special for dinner?
I will be back in time for dinner, so don't make any plans.
I'm sorry the Assvengers gave you a present rigged to shoot confetti in your face. How hard did you kick their asses?
Are you letting Agent type your replies now? alsdjalfjoewfj2 is not a word.
Mission's all done. I'll be back on the helicarrier in two hours. Wear something nice.
Hill looks up from her phone just in time to deliver the closing reports in the meeting. There is not a hint of excitement on her face, and if you asked anyone around her, they would comment that Hill was cranky as ever. When the meeting ends, Hill storms into her room and locks her door before a huge smile overtakes her face and she spends the next hour half getting ready and half giving Agent the attention he wants.
Three hours finally pass by, and Hill is far from the excited birthday girl. She's honestly ready to rip Phil a new one for pulling this stunt on her birthday. He's always punctual, unless he finds a civilian in danger, but even then, he's usually very quick about it and makes up for lost time.
At hour four she gets a text from him.
In med bay. No major injuries. Your dinner is with me.
With Agent in her hands, Hill hurries into the med bay in her low heels and pretty dress. Halfway in the door she realizes Phil's room is full of well wishers. Hill straightens up and adjusts the kitten in her arms before calmly walking over to Coulson's bed with a huge frown on her face.
"Agent Coulson. It's good to see you're okay, even if you are late."
But she honestly is worried. He's got an arm in a sling and a bandage is wrapped around his forehead and a large bruise is forming under his eye. She wants to punch his other eye because she knows these injuries aren't from his mission. They're from him being a hero.
Hill puts Agent down on Coulson's lap and looks around the room with her deadliest glare. Fury doesn't even need to look at her to tell she's upset and wants the room cleared. He's already got half of them out the door before Hill can swivel her glare around the room.
Once she alone, she closes the blinds and goes to sit on the bed. Phil looks at her, small smile on his face, while his un-slinged hand is busy petting Agent.
"I already apologized for being late, but I want to say I'm sorry for ruining your birthday in person. I did get you the dinner I promised. It's in the chair over there."
Hill looks over and sees the large brown paper bag and sighs. Shaking her head, she leans over and grabs their dinners out and hands Phil a fork. They begin eating quietly, not saying a word until ten minutes later when Maria finally clears her throat.
"So, what exactly happened this time?"
"Would you believe that someone robbed the bank across the street and held everyone in the restaurant hostage?"
Later, both her Phils are sleeping off a full tummy when Maria find an envelope with her name on it at the bottom of the bag. She opens it up to find her birthday card, and written inside of it is a promise.
Next year, we're both taking the day off and going somewhere nice.
She's going to hold him to this.
