Okay, so I know my flashbacks can be really confusing, but this is WAY before Prowl and Chromedome/Tumbler had their little moment.
Sunstreaker used to be a part of the strike team with his brother-in-arms, Sideswipe, before the war. The golden yellow mech was Sideswipe's P3 Training Officer, and took every chance he could to put down his so called rookie. It was typical for the two close partners. Sideswipe was constantly living in Sunstreaker's shadow, and he hated it. All the mechs seemed to look right past him as if he were some lousy ghost and they'd run their optics right through him so they could admire his beautiful brother. He didn't really get it. They were in the same social class, they were built loosely based on the same frame, had the same alt mode and practically the same job, but Sunstreaker seemed to always be better.
Sideswipe was looking up at Sunstreaker. Literally. "I got a call. The senate needs us in Iacon." He was laying down on a couch with his arms under his head as he smiled up at the golden mech in front of him.
"I know, Sideswipe. I've already received the call. No need to repeat it to me." He said dryly as he turned around to go get his stuff ready.
"I was just saying you know! Primus, Bro! You don't have to be such a stuck up glitch about everything." He mumbled the last part to himself. Letting out a big sigh, he frowned and slowly got off the couch to stretch his sore back struts. "Anyways, I'm already all set and ready to go." His face contorted into a smirk as he watched his twin get ready. "Wouldn't want to be who slows us down." He added trying to get under Sunstreaker's circuits.
His brother ignored his comments and mumbled a plethora of profanities under his breath. He finished packing everything into his subspace and looked back at his brother. "We're going to be under some mech designated, Prowl. I heard some rumors about him. He's a full autopsy loving, by the rule, stick up his aft officer in the Iacon mechaforensics unit. Be nice and respectful Sideswipe."
Sideswipe laughed loudly, "When am I not nice and respectful, Bro?"
His brother sighed and put a hand up to his helm pinching his nose. "Do I have to answer that, Sideswipe?"
"You both did a good job." Prowl said while offering a hand for the strike team members, Sunstreaker and Sideswipe, to shake. Sideswipe gracefully took it and gripped it tightly while moving his hand up and down giving him a firm handshake. Prowl frowned trying not to wince at Sideswipe's grip of death. Then, Sunstreaker took the mech's hand and gave a looser handshake.
Sunstreaker looked at Prowl and frowned feeling a wave of anxiety about to hit him. Ever since he met Prowl the previous day, he couldn't help but feel jumpy or feel so weird and anxious around him. Sunstreaker closed his hands into a fists and scowled looking away.
"You okay, Sunstreaker?" The mechaforensics officer asked.
"Yeah." He responded a little too quickly and regretted it immediately. The scowl on his face started to become more apparent every passing second.
"Why don't we discuss this over some energon?" The black and white mech suggested while eying the angry looking mech in front of him. Prowl found the mech attractive, but thought nothing more of him other than his abilities as a strike team officer.
"R-right now?" Sunstreaker asked as his scowl disappeared.
Prowl nodded, "If Sideswipe doesn't mind."
Sunstreaker looked over at Sideswipe and he received a shrug from the red mech. "I don't give a frag." He responded causally. Sunstreaker nodded and looked over at Prowl nodding.
Sideswipe gave a soft smile and left. "Shall we?" Prowl asked while turning around to start walking to a near café.
The walk to the café was painfully silent and awkward. Sunstreaker sat down at the booth Prowl picked out and looked at the mech in front of him. Sunstreaker absolutely adored the way his red helm horns contrasted with his black and white frame colors. He studied the way his door wings curved and how they sat on his back. He studied his shoulders and looked closely enough to see sensitive cabling that was almost ready to be touched, massages, and kissed.
"How long have you and Tumbler worked together?" Sunstreaker asked curiously. There was a part of him that hated the way Tumbler looked at Prowl and he especially hated the way Prowl looked at him, but if Prowl bothered to take him out for energon, that must count for something.
"Actually, we've just gotten to work together about two weeks ago. Not that long. He was transferred from a different team into mine." Prowl said while sitting back on his chair while taking a sip of his energon.
"Good." He thought that if they were barely working together, then feelings wouldn't have been true or apparent at all. But then again, they only met the day before. "You were saying something about the senate earlier?" Sunstreaker asked.
Prowl sighed and looked into Sunstreaker's optics. "Small talk isn't why I invited you to drink energon with me. I thought it would have been obvious." He stated wanting to get down to business.
The golden yellow mech gulped and blinked a little too anxious and scared to say anything else. He looked back into Prowl's optics and tried not to get up and do something stupid.
"I see the way you look at me." Prowl added. Prowl thought he was attractive, but nothing else. Although, he knew the mech in front of him worked under the senate. If he could make a connection with someone high up there, than maybe he could change something for himself. Become one of the few whom escape their designated job for life cheating the system. He wouldn't consider this cheating, but he'd consider this just a useful and dispensable resource to have.
Sunstreaker nodded and looked down not wanting to meet his optics. "I might possibly have some feelings for you." He didn't want to lie. Worst case scenario: he gets rejected. And if he gets rejected, he just has to tell the senate to send a different team to Iacon from now on. But if Prowl does return the feelings, then he has something to look forward to. He'll have an excuse to go to Iacon.
Prowl nodded. "You want me?" It was a simple question, but the answer would make Sunstreaker's feelings and attentions crystal clear.
"You have no idea about what I want you to do to me." The golden mech responded as he looked down at his hands fidgeting with his fingers. He tried to count scratches, metal imperfections, uneven finishes, and microscopic dents on his leg plating.
"I couldn't imagine, Sunstreaker." Prowl smirked as he calculated the odds of Sunstreaker becoming a valuable and loyal resource to him. His prognostic programming calculated that Sunstreaker would be perfect for a role of bringing him closer to the senate. "What might you want me to do to you?" Prowl asked not knowing exactly how to answer Sunstreaker's statements.
Sunstreaker looked back up at Prowl after finding out he couldn't possibly have more than two imperfections on his golden yellow leg plating. "I need to know how you feel first Prowl."
"That's reasonable." The black and white mech concluded. He sat up straighter as he made mental calculations on how would be the best way to respond. "I feel attracted to you." He wasn't technically lying. "I find you intriguing. Different from all other mechs."
The mech sitting in front of him nodded along and placed his hands on the table of the booth. "I want you."
"Physically or mentally, Sunstreaker?" Prowl asked trying to find out the other mech's limits.
"Would it be wrong to say both?" Sunstreaker said while staring at the mechs beautiful curves.
"No. It wouldn't be wrong." He tapped his fingers along the top of the desk while he started to think about everything currently occurring between them.
"Good." Sunstreaker couldn't help but heat up at the thought of Prowl holding him, touching him, loving him, and tying him up so Sunstreaker could completely become one of Prowl's little toys.
"What if I were to ask for you to come to my office tonight?" Prowl asked wanting to get him desperate enough to want to do anything for him that night.
"I would say yes. I would definitely come. Wouldn't miss it for the world." He responded confidently.
"Okay." He decided. Prowl eyed him once more and tried to come to a few final conclusions. "You're a sub, right?" Prowl asked while evaluating the kind of mech Sunstreaker was, and trying to evaluate how Sunstreaker would choose to interface.
"Y-Yes. I am, Prowl." He responded. "I'm not into that vanilla slag. I want the real deal. If that's okay with you."
Prowl smirked and looked into Sunstreaker's optics. It would have taken him a while to come to the conclusion he was into bondage. "No vanilla? Got it. I have some nice supplies myself. In my office, actually." He tilted his head and stared into Sunstreaker's needy optics.
Sunstreaker smiled and smirked at the same time, which ended up looking really awkward. "Okay Prowl. That's fine with me. That's perfect." Sunstreaker took a couple more sips of his energon cube and put the half-full cube back down. He completely forgot about the cube because he was too focused on the black and white mech in front of him. He looked over at Prowl's almost empty cube in his hands. He knows how to multitask. He thought to himself. It was either he couldn't drink or talk, or his cube magically disappeared when they were having a conversation.
"Good." He said before lifting his cube back up and slowly drinking the remaining amounts of energon. "See you tonight." He left it at that and got up to start walking away from the café.
The golden yellow strike team member looked at his energon and swirled it around the cube a couple times before downing its contents. "Okay." He said to himself as he got up ready to leave.