A/N: Okay, there will be a little more interfacing in the next two chapters I have planned. Anyway, you know my disclaimers and such and such. In this chapter there is an OC called Arhaza. On with the show! (Italics denote a flashback)

Firsts: Heartbreak

2 years after Bee and Kacey's first interface

Leaning back on her recharge berth – her and Bee's recharge berth – Kacey mused over the past two years she had spent with the mech of her life.

The day after their first night of interfacing, Kacey had gone out to get some energon in the rec room. Bee had an emergency shift he had to fill in, or else he would have gone with her. As she (tried) to walk with dignity, some bots noticed the slight waddle in her stride and had winked at her. She thought that her stride had given her away, when Rox, Nitro and Firestar appeared before her.

"Hey Kacey, is that why you wouldn't go out with me? 'Fraid I wouldn't make you scream?" asked Rox bitterly. Firestar whipped out her gun and struck Rox in the back of his helm.

"Hey!"

"Shut up Rox! Kacey has probably had the night of her life and you go and ask a stupid and selfish thing like that? Shame on you!" Firestar yelled at the fallen mech. Nitro smirked. He loved his bonded femme. He could feel happiness for Kacey and anger at Rox through their bond. Firestar turned to Kacey, who was standing there in shock.

"You heard me scream last night?" she asked in surprise.

Firestar nodded, "Yeah, us and almost all of the Autobots. That's why everyone is going to be looking at you funny and winking at you. Watch out for the twins though, they found out from Ratchet that Bee has a bigger spike than them, and are looking for you to prove it."

Kacey stood still. So many emotions were running rampant in her processor and spark. Satisfaction from Bee's ardent affections from last night; embarrassment from screaming in ecstasy loud enough to let all the Autobots know about her activites; pride that her mech was able to produce that out of her vocaliser; anger at Rox's idioticy; gratefulness at Firestar's warning; and worry about what this would mean for her status in the optics of the Autobots. So many feelings whirled around.

"I...b-but...oh...slag" Kacey swore, and offlined in embarrassment.

Kacey chuckled as she remembered she had woken up in the medbay in Bee's arms. He had told her that on the orders of Optimus that no-one was permitted to speak about the incident for fear that Ironhide would use them for target practice. Bee had also told her they were going to get her suite sound-proofed like Optimus and Elita's.

Kacey's optics roved around the suite. And they had taken full advantage of the sound-proofed walls. They interfaced whenever the opportunity arose in the midst of battling the Decepti-creeps, caring for Stardust, and doing their duties as Autobots. Kacey giggled to herself. She was sure that there was not one surface in her suite they had not interfaced on. But they had always done so as equals.

Kacey knew she wanted to be bonded to Bee someday. She sighed a bit. She also knew she wanted sparkling of her own and wanted it to be with Bee. She loved him so much. Their love had grown like how an acorn grows to an oak. It began small, but grew mighty and powerful. They told each other everything, as Kacey wanted the utmost honesty between them, and Bee agreed to that.

Kacey paused in her thoughts. Because they did tell each other everything, there had been one little blight on their loving bliss. A neutral femme called Arhaza. Bee had told her that the little olive-green femme was training to be a scout with him, and the next day, Kacey went to watch her beloved. As she was watching, Kacey saw Arhaza making small advances towards the yellow mech. It was the brushing too close to Bee's frame, bending from the hips down in front of Bee to pick up something so that he would notice her aft. It was the high-pitched giggles and sickly-sweet gushes of "Oh Bee, you're so strong" and "Oh Bee, thank you! You're so sweet." Kacey had seen that her mech was oblivious to the femmes attentions and had stalked down into the training arena to save him, claiming that he had to be somewhere. Kacey had then pulled Bee away from the arena.

As they were walking to their now-shared quarters, Kacey asked, "Didn't you see that Bee?"

Bumblebee had turned to his beloved, confused, and asked "What was I meant to see?"

Kacey sighed. exasperated. "I don't know, the femme called Arhaza who was so blatantly flirting with you? Couldn't you tell Bee?"

Bee shrugged and shook his head and pulled Kacey into a side hug saying, "No. And even if I did, she's got nothing...nothing on you, sweetspark. Why would I want to pass you up for Arhaza? You are the perfect femme for me." Kacey had leaned into the touch and smiled, re-assured that her mech loved her more than ever.

Bumblebee had then sniggered and then mock-growled, "And you are also very, very talented on the berth." Kacey had mock-punched him and laughed with him as they continued into their quarters.

Kacey pulled herself out of her thoughts and checked her internal chronometer. Bee had had another training session with Arhaza that day, and said to her that he would be in their quarters by 3pm. He wasn't here, and it was now 3.10pm. If anything, Bee was always punctual for his sweetspark. Kacey started to get suspicious. She didn't trust the too-sweet neutral femme. Rising off of her berth, Kacey exited the suite and headed down to the training arena, feeling an eerie sense of Deja-vu.

Kacey entered the viewing room and sighted no bot, so she exited and decided to see if they were in the weight room next to the arena. She was about to walk through the open door when she heard Bumblebee say, "Here, I found your tracer. It was right here under the sign-in desk."

Kacey stayed outside the door, listening, then saw a mirror that looked into the room. She positioned herself so that she could view the room through the reflection on the mirror, and activated her invisibility cloaking. She saw Bee hand over the tracer to the slender olive-green femme. Arhaza quickly subspaced it. Then she did something that made Kacey's energon boil. She jumped on Bee and wrapped her legs about his hips, hugging him.

"Arhaza! Get off me!" Bee yelped.

Arhaza just clutched him tighter and giggled, "But I am showing you how grateful I am Bumblebee!" Bumblebee just shook his head and unsuccessfully tried to pry the femme off his form. Kacey watched, waiting to see if she should step in now or see what her mech would do.

"Get off! Why are you doing this?" Bumblebee tried again to get Arhaza off him, spinning around, not wanting to resolve this with force. He didn't want to hurt the femme regardless of how besotted she was with him.

Arhaza squealed in delight as she was spun. She then pinched Bee's chinplate and thrust it up so she could look into his optics, saying, "Oh dear scout, I know you have been watching me."

Before Bee could protest, Arhaza swooped down and gave him a hard kiss, forcing his mouth open, pinning his helm in place with her hands so that he could not move from the kiss. Bee tried to close his mouth and shove Arhaza off of him, but he couldn't without harming her.

Meanwhile Kacey was frozen in outrage. It was like watching a car crash; you know you shouldn't be watching it, but you did it anyway. Kacey's processor was telling her that Bee should be able to remove he femme easily, but he didn't, so therefore he must be enjoying it. Kacey, full of pent up rage, removed her cloaking device and barged into the room.

"GET THE FRAG OFF OF MY MECH NOW YOU STUPID SLUT!" Kacey roared, slipping her battlemask into place and switching her hand to a blaster. With a squeal of terror, Arhaza broke off the kiss with Bee and ran for the door. But Kacey was faster. She leaped up and pinned the smaller femme under her frame. Arhaza screamed in pain as she was pinned.

"How dare you," Kacey growled, "Do you know who I am? Because if you aren't out of my sight in an astrosecond I will personally disable you...piece by slutty piece. And no-one will question it. Got that bitch?"

Arhaza whimpered. In her processor, she heard someone tell her not to flirt with her mentor scout Bumblebee, because he was already taken. But she didn't know he was taken by Optimus Primes daughter. Wanting to get out of Kacey's clutches, Arhaza nodded and ran.

As the femme scampered off, Bee was both relieved and fearful. He was glad Kacey had stopped the kiss...because if truth he told he felt he needed to borrow Ratchet's strongest sanitizer after it, but he was fearful of Kacey's wrath. He knew the power she wielded. He stepped closer to his femme.

"Kacey."

Kacey slowly turned around, blazing fury in her optics. "You," she snarled. Bee put up his hands in surrender.

"I didn't want it sweetspark," he murmured.

"LIKE PIT! And don't call me sweetspark! Not after that. You could've gotten her off, but no, you take her for a fragging joyride instead. That tells me you enjoyed it!" Kacey yelled. She stepped closer, tears beginning to flood her optics in her rage. She was hurt by the kiss.

"I did NOT, Kacey! I didn't want to hurt her! I don't want to hurt my fellow Autobots if I can't help it and you know that," Bee cried. His spark was beginning to sink. Kacey was not being rational and might blow a hole in him if she wasn't careful.

"Why didn't you cry out for help then? Even after I told you about her advances you kept training her!" she cried back. Anguish was now taking over, and her blaster changed back into a hand. She stepped up and slapped Bee across his faceplates, screaming, "Why didn't you tell her you had me?"

Bumblebee was shocked that Kacey had slapped him, but he tried to cool his slight anger. It would be no good to be in a rage (seldom as it happened for Bee) now. He tried to reach for his berthmate, but she shied away.

"I thought her actions were a one-off thing Kacey. She wasn't bad today until she asked me to help her find her tracer. Sweetspark, please listen to me. I don't want her. She's ugly as pit, inside and out. I want you, my Kaceystar, body, processor and spark," Bee finished in a whisper. Kacey had started to cry at his sweet words. Now that she wasn't blinded by suspicions and anger, she knew Bee meant every word.

Crying in shame, she turned and ran out of the weights room.

"Kacey! Come back...please!" called Bumblebee, running out after her. But she was too fast, transforming into her McLaren F1 alt mode and speeding away. Bee felt rotten to his spark. He loved Kacey so fragging much and her rejection to work things out with him was killing him. Getting an idea, he began searching for Kacey's little brother Leo.

Catching up with his friend in his room, Bee told Leo all that had happened. "What should I do Leo? I want...need to make her see how much she means to me."

Leo frowned, then got an idea. He liked Bee, and he liked his friend with his older sister. Leo knew they were good for each other. Mentioning for Bee to stay in his chair, Leo disappeared into his berthroom. After a minute he came out, bearing a superbly sculpted glass rose. The glass petals were bright crimson and the stem and leaves were a soothing forest green.

Handing the piece to Bee, Leo said, "This was sculpted by Sunny. It was going to be my gift for my mother at Christmas in a few months, but I see you need it more than I do."

Bee was humbled by the gift. "Leo...are you sure..." Leo held up a hand.

"Dude, you need it more than I do. Besides, I want you guys to end up together and stay together. If this helps, then I can get Sunny to make something else. Don't worry about it. Just take over a shift for me someday when I go on a date with Sapphire." Leo spoke with finality in his tone, booking no argument. Nodding, Bee gave Leo a friendly slap on the back before heading up to his and Kacey's quarters.

When he got there, he heard very faint crying behind the metal door. Sighing and wishing the past two hours had not occurred, Bumblebee entered the suite. He walked in silently and stood at the entrance to the berthroom, where Kacey was sprawled out, sobbing into a pillow. Bee's spark broke at the sight.

"Kacey, my love," Bee called softly. She slowly turned to him and sat upright, wiping the tears harshly of her faceplates. She looked at him with saddened optics.

"I'm so sorry. I can't express how sorry I am and my spark hurts Kacey, because I feel like you won't trust me anymore. I love you. That's all I can say. I love you Kacey, with all my spark. It hurts, Sweetspark, it hurts," he said softly. She was watching him silently as he stepped forward and kneeled in front of her, presenting her with the glass rose.

Kacey was astonished that he brought her a gift. She was still feeling rotten for turning on Bee earlier, and started to weep again. She took the rose and clutched it to her chest.

"Oh Bee...babe, I'm sorry too! I realise you didn't want it at all. I was just jealous and outraged and..." Kacey cried, dissolving into more sobs. Bee stood up to sit on the berth and pulled her into his lap, holding her as close as possible without breaking the rose. She wept quietly into his shoulder, savouring in the sturdy, warm feel of Bumblebee's body.

"Can we leave it in the past Kacey? I don't want to hear that femme's name again. I'll switch her to Mirage. I'll do anything," he murmured into her audios.

Kacey rose her head, "You already have Bee. You already have," she whispered, then captured his lips with her own. Bee took the rose from her hands to place it on the berth-side table before replying to Kacey's kiss with enthusiasm. Kacey's kiss was what he wanted and needed. He groaned into the kiss as she toyed with his glossa, a few strings of oral fluid swapping between them.

Bee broke the kiss and laid Kacey back on the berth reverently. He leaned closer to her audio and whispered huskily, "I am going to make love to you all night. You and only you. But you will over load two times without me first. That is my punishment I am bringing on myself. For now only you will be pleasured. No touching my spike, even by myself, until I give you at least two overloads by my glossa, mouth and hands."

Kacey moaned in desire. It was every femmes dream. Pleasure for hours by their mech, making sweet love all night. She retracted her armour and displayed her lithe protoform. Bee also retracted his armour but kept his spike housed with a firm command.

"I am going to overload you just by touching your doorwings Kacey," Bee purred into her audios. He began to massage the wings, licking wires peeking out through the protoform, sucking on them and nipping them lightly. He gently pinched the most sensitive points, fondling the join of the wings. Bee was gentle and firm at the same time, sending tingling sensations up and down Kacey's body. Her port began to heat up and was slicked up by lubricant. She began to pant due to her lovers touches.

Bee paused and then started to use mag pulses up and down her wings. Kacey gasped and arched into his body. Bee went in a pattern, starting at the tips of the wings before bringing his hands down in tandem to the juncture. Kacey was now wriggling around in pleasure, sensor nodes on her wings transmitting lots of pleasurable data as he repeated the process again and again.

Bee heard the 'click' of Kacey's port opening and her moans of "Yes, yes, Bee...ooooh" and knew his love was close. He then upped the mag sensation and sent a jolt right at the juncture of her wings.

"AH! Oh YES!" Kacey cried as overload overwhelmed her senses. She shuddered as lubricant trickled faster out over her open slit. Bee caressed her wings gently as she completed her overload. Kacey looked up to ask Bee how he had done that when the yellow and silver mech shimmied down her body and buried his faceplates at the apex of her slim thighs.

"BUMBLEBEE!" Kacey howled as Bee pressed his glossa into her hypersensitive, wet port. He swirled his glossa around, tasting the sweet purple lubricant, sucking it down his throat. He didn't care about his pleasure right now, all he cared about was Kacey. He drew his glossa out and plunged it back in, imitating their favourite rhythm when it was his spike. With each lap inside the tight port, more lubricant leaked out.

And with each fondle by the glossa, Kacey let out the most husky groans and grinded her hips against the gifted glossa of Bee. "Oh please, Bee, yes, faster...mmmmmm...oh! Let me come babe. You're so good...oh yes, yes!"

Just as Kacey was on the brink, Bee pulled out and nibbled on the soft folds surrounding the port. Kacey see-sawed her hips, wanted the glossa in her port again, wanting it to make her feel worshipped and desired. She emitted a strangled groan as Bee merely kissed her port, not putting his glossa in.

Growling, "Make me overload dammit!", Kacey pushed Bee's head down and he obliged, grinning slightly at his femme's demanding, and thrust his glossa into the slick tightness. It only took a few more strokes with his glossa moving around the pleasure nodes before Kacey overloaded, port clenching and rippling around Bee's glossa.

"BBEEEEEEE! AAAAAAHHHHHH!" Kacey squealed, bucking her hips wildly and optics shining white as she overloaded, more lavender lubricant flowing out of her port around Bee's glossa. Bee licked it all up, relishing in his femmes taste and the way he made her overload. She was slumped over the berth, panting, by the time her overload finished.

"Oh Primus...and you only used your glossa," Kacey panted. Bee moved up and to the side of Kacey, embracing her as she recovered from her second, powerful overload.

"And I'm gonna make love to you all night long," he whispered lovingly. Kacey chuckled weakly and moved her hand to the housing of his spike. Her optic ridge lifted in a challenge.

"Then show me what you got, mech." Complying with his love's command, Bee rolled them over and began to seduce her again. And they did make love all night long.

.

A/n: I think making up interfacing is the best, yes?