(Yes i aged reader 😝 goi.)

Optimus looked over the teenager, about 17, relieved tears were in her eyes as she choked on a happy sob and ran toward the bot. That was y/n.. a 27-year-old soldier. But she was captured by an evil government scientist and subjected to tests, her e/c was lighter than usual, a side effect. Her body trembled as she held onto his ped, he shot at a few of the scientists allowing Lennox and his team to go in to arrest them. Scars ran across her arms and stomach, she was malnourished leaving her clothes baggy and ripped allowing optimus to see the scars on her stomach. But the most striking thing was her smaller body, the scientists had created an age reversal potion. Don't ask how but they managed it.. she looked nothing more than sniveling and sobbing teenager while she clung onto the prime whom she had a close relationship with, before everything happened she was Lennox's helper so she seen him more than any of the other bots and they grew close over time.

Optimus picked her up and craddled her in his servos, she latched onto his digits, trembling weakly, her body needed nourishment.

That was over 5 months ago.

Optimus stood there beside y/n now, 5 months down the road and she was still recovering, she took a swing at the punching bag. She had glasses now for the lack of eye sight, her h/c tied up in a bun.

She remained on duty but only to what Lennox allowed her to.

Optimus smiled slightly when she kicked it in the side making it swing, the sweat rolled down her forehead as she breathed heavily before turning to him. She was building much stronger than she was before as she removed her glasses cleaning them from the sweat before wiping her sweat off into a towel, smiling at the Prime. He used his holoform to become her trainer and help her get better.

She slightly flexed and smiled revealing toned muscles and her old scars

Optimus couldn't help his growing smile, over the last 5 months he was there by her side and started to grow stronger feelings for her.

She then laid on the ground, her feet planted onto the floor and patiently waited for optimus as he crouched down and held her feet and legs allowing her the do her sit ups without wavering, her legs slightly parted as she grunted softly after her first 30. She still needed work.

She laid there a moment as she took a breather, Optimus released her feet and so she moved onto her stretches, Optimus helped with those as well, Optimus helped stretch her out for flexibility.

He watched her silently, he looked over when her shirt lifted as she went upside down into the wall, revealing some of her bra as well but she didnt care.

She went on to lift weights for awhile. Optimus stood behind her incase she couldnt do the next set.

Optimus couldnt help it, he had to admit he had grown to love Y/n.. he just wondered how to tell her.

They went their seperate ways after awhile, Optimus went to see her in her room that night to see how she was. When he entered she was doing yoga. Her upper body bent down in an arch, while her hips and rump were in full climax position allowing optimus a nice view of her rear, the crease in her pants and her plump gluteus.

She didnt see him enter as she lifted a leg up and an arm focusing on 1 arm and one leg. Optimus gently cleared his throat as she glanced over but smiled and corrected herself and stood "hey, Optimus."

"Hello, y/n, just checking in."

"I'm good, just doing some yoga." She explained gesturing to the yoga mat on the floor

"By all means, please continue." Optimus gestured her down aa he closed the door.

Y/n nodded and did so as she got down almost in a praying position, her legs tucked under her thighs and her arms outstretched, Optimus watched out of curiousity.

Her next position was laying flat on her stomach, her legs went up and bent forward allowing her hands to go up and hold her feet.

The next, she leaned back, her legs tucked under her but laid on her back, her arms stretched behind her head. Optimus let a low rumble slip when he could see the outline of her underwear she didnt hear it and held her position. She sighed and sat up when that was over with before untucking her legs and shifting into a fetal position, her legs up to her chest and arms held her knees, her eyes closed and sighed contently. He learned this was the most comforting position a human could be in because it reminded them of before they came to be, an interesting fact indeed.

"And one more." She smiled when she stood but bent down, her legs spread wide, her hands grasping her feet, her head dangled a bit but remained still for a moment. Optimus took the opportunity to move forward, gently brushing her rear making her look up

"Y/n.. i have to tell you something.." he said quietly

She tilted her head slightly but glanced at his hand when it gently moved over her back, her curiousity peeked "what is it?"

"I.. have been falling for you." He admitted making her straighten out and turn to him "Optimus...?"

He looked over her, gently grasping her chin "Ever since your accident i cant help but feel a strong connection.."

She stared at him surprised but glanced away while blushing "oh wow, Optimus. I.."

"I hope this does not effect our friendship.."

Y/n looked up at him and softened "of course not.. It's just.. i'm a little shocked.."

Optimus gave a quiet hum of acknowledgement "i see.."

"But i'm glad.. because i feel the same...but my feelings go back to way before then.."

Optimus looked down at her somewhat amused but curious "how long?"

"I... lost track.. the earliest was a year after your arrival.." she murmured biting the inside of her darkening cheek

He smiled ever so softly when she looked back at him "i just couldn't find the courage to tell you.." she murmured "but then i figured you wouldnt like a human so i stopped myself every time.."

"Species isn't what should divide us. Only love.." he said letting her chin go and gently thumbing her cheek

Y/n smiled a bit and embraced him, she stuffed her face into his chest and sighed happily

"This feels so good to finally let out.."

"I agree." Optimus murmured and stroked down her hair, "i love you, y/n"

"Love you too, O.P." y/n chuckled softly making optimus crack a small visible smile

Y/n glanced up at him and grinned "oh what a story this'll be.."

"It's already been written.." optimus said softly

Y/n tilted her head a bit

"In my data log, i have started recently, the humans say it is a good way to relieve feelings."

Y/n cocked a brow "you mean.. like diary?"

"If that is what you would like to call it." He nodded

"Who have you let read it..?"

"Well i mostly leave it in my cab but epps and lennox have read a few pages about our field activity."

"Hm.." y/n hmmed but glanced away "oh boy.."

Meanwhile in the hangar:

Epps flipped to another page and chuckled, optimus had written all about the details he had realized in y/n like her curves, or even how her uniform hugged her, or the texture of her h/c locks. "This dude needs a hobby other than diary writing.." he mumbled