Guardians And Primes (TFP Optimus x Mech!Reader)

A/N bit of a smut chapter, nothing too crazy
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Optimus and I would secretly meet up in my assigned berthroom when he wasn't working on whatever it was that Megatron had him doing. We would often talk casually, and when no one was around, I would sneak a kiss on his cheek. Internally, I was hoping these sweet gestures would jog his memory of me even just a little bit, although I knew it would most likely be in vain.

One evening, however, as I was sitting in my assigned berthroom meditating, I heard the door open and saw Optimus enter with a strange look on his face. As he closed the door, he locked it and sat on my berth. I got up and went over to him.

"What's wrong?" I asked.

"I... I discovered something about myself that doesn't make sense." He said. "I'm... I'm apparently Optimus Prime. But I don't know why I can't remember it."

"I'm afraid I may have a theory... one that Megatron was... using you to keep me quiet about it."

"Using me?"

"Orion... Optimus... you don't remember because you no longer carry the Matrix. You... you don't even remember me." I said, my forehelm pressed against his shoulder. "We were close, very close. Megatron threatened to bring harm to you if I stepped out of line. I know you don't remember me, but... clearly, you still feel things for me... r-right?" I asked, tears threatening to spill.

"Palaton, the moment I saw you, I knew I loved you, although I did not know why." Optimus said, tilting my helm up. "I may not remember exactly who you are, but I do remember that I love you." I felt my spark burst in my chest plate at his words, tackling him to the berth and slamming my dermas against his. I felt his servos run up my frame, a soft moan escaping me when he grabbed my aft. I ground myself between his legs in response, a muffled moan leaving Optimus.

"I am not good with expressing my emotions with words." I said as I broke the kiss, softly nipping at his neck cables. "So let me show you." I slowly kissed my way down his frame and eventually got to his spike panel. I gently kneeded the got metal, the panel popping open to reveal a very needy spike. Optimus was a brilliant blue and looked away in embarrassment. I smirked and gently took his length in my servo, stroking him up and down. Optimus let out a rather errotic gasp, his denta clamped down on his digits in an effort to muffle the lewd sounds. I continued to stroke him and lightly kissed his valve panel, popping it open to reveal his very aroused heat.

"P-Palaton, what are you - Ah!~" I cut him off by sliding my glossa across his anterior node, the sensitive bundle of cables twitching at the touch. I continued to stroke his spike as I swirled my glossa around the node, eventually burying it deep inside him. Optimus let out an errotic moan, his legs wrapped around me. With my free servo, I gently thumbed his adorable node, the combination of pleasure causing Optimus to buck his hips.

"P-Palaton!~ It's too much!" He whimpered, his vents becoming hot and heavy. I only hummed in response, continuing to do my work in pleasuring my love. I felt his spike twitching in my servo, and I decided to switch things up. I pulled away from his heat and slid a digit inside his valve with my free servo, popping the top of his spike into my intake. I pumped the digit in and out of his soaking valve as I thumbed his node, sliding more and more of this spike into my intake as I sped up. I slowly bobbed my helm up and down his length, my glossa caressing the underside.

Optimus grabbed at the horns that adorned my helm, and errotic moan escaping me as he held on. I continued to bob up and down and thrust in and out. The buildup was not my goal. It was making Optimus feel amazing.

"P-Palaton! I-I'm going to overload if you k-keep that up!" Optimus gasped. I smirked and suddenly deep throated his spike, Optimus throwing his helm back and his optics going wide in pleasure. I felt his spike twitch wildly in my throat.

'Do it, love, I want to hear you.' I thought, a rush of hot fluid flooding my intake and covering my servo as Optimus let out a quiet moan of ecstasy. I swallowed the fluid and pulled away with an audible pop, observing the blushing mess of a mech that was venting on my berth.

"You're beautiful when you overload." I said softly. "I hope the message got across to you how I feel."

"It... it did." Optimus managed to say. I then gently replaced his plates and nuzzled into his neck, my arms wrapped around his large chassis. "What... what about you?"

"I don't need it. The fact that I was able to make you feel bliss like that is more than enough for me." I purred in his audial, gently biting it. Optimus gave me an adorable grumpy look before flipping us over and pinning me down. I looked up at him with surprise. Optimus then bit at my neck cables, and my optics went wide, and a quiet gasp escaped me.

"That isn't fair.~" He purred, my faceplate a brilliant blue. I felt him slide his servos down to my panels and pull them off, his digit roughly forcing itself inside my soaking valve and his thumb pressed against my node. I clung to him and buried my face into his neck as he slid another inside, the sensation of it causing me to whimper in pleasure. He expertly found my inner node and gently stroked it while he thumbed my anterior node. I couldn't help but buck into his servo, Optimus purring in my audial as I made tiny whimpers in his. I felt a knot build in my tanks, my venting becoming more and more rapid.

"I-I can't hold back!" I silently cried, the knot snapping as my overload came. I rode out the high against his digits, my frame relaxing in exhaustion. Optimus gently pulled his digits from my core, a quiet moan escaping me as they left. He seductively licked his digits clean before returning my panel back in place and pulling me to his chassis. We both ended up as a tangle of limbs as we went into a satisfying recharge.