Imagine your OTP going through a second honeymoon phase when their kid(s) are a bit older. The kid(s) know what’s going on and are really embarrassed about it, especially when their parents flirt around them, knowing what it will probably lead to later on.

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Eating had managed to become a bit of a family affair. Many of the Decepticons refuelled alone or in their little groups although their was a communal area for it. It wasn't hard for a brawl to break out there or for Brawl to break something there.
Refuelling could be a rather adventurous thing in that room.
Since he was young Conquest had always eaten with no one else but his Sire and Carrier.
Conquests legs were still too small to reach the floor from the chair and he swung them excitedly as he ate, the day was still new and he was always excitable in the mornings.
He ate something that could be likened to toast, the texture being something he enjoyed the most. Conquest looked up at his Sire who sat opposite from him, Cyclonus had his optics on some reports. Conquest could tell which report came from which group just from the styles, the neat one was most likely from the more organised builder group, the messy one was probably from the cars and the one that looked half-eaten already probably came from a animalistic bunch. He still hadn't completely remembered their names, he hadn't quite bothered really. Didn't interact with them enough for it to matter.
Conquest leaned over the table a little to see the reports, he figured as Prince this would one day be his duty, then again he could just order someone else to do it for him.
Cyclonus watched him leaning over and taking a peek at the datapads. Extending a hand he patted Conquest on the head and snuck an affectionate tickle at his neck wiring.
Conquest squeaked and instantly shrunk back to his chair pulling up his hands to his neck putting a very annoyed and accusing glare squarely on the perpetrator. Cyclonus chuckled at the sight.
Well Conquest had now decided he was going to spend the day with his Carrier instead of his Sire he pouted over the surprise tickle.

Said Carrier had been watching them from afar and eventually came over to join them.
Galvatron draped himself over Cyclonus like the most ornate cape.
"You know our little prince doesn't like his neck being touched" He murmured using his fingertips to slide around the datapads Cyclonus was attempting to read "Touch mine instead"
Conquest immediately huffed at his parents. Galvatron chuckled loudly.
"You may be telling someone that someday" He peered slyly over the top of Cyclonus's head.
"Oh he may not be inclined for a partner my dear" Cyclonus snaked an arm up and around Galvatron stroking his helm.
"Eugh" Conquest made a exaggerated 'gross' face at them but Galvatron only chuckled harder.
"Careful if you keep pulling that face I'm gonna have to come over and tickle you!" his Carrier grinned widely
"Nuuu" Conquest whined shoving another bite of his breakfast in his face trying to ignore the 'threat'.
"Will it work for me too my Lord?" Cyclonus grinned just as widely as Galvatron
"Hmm that goes without saying hun bun" Galvatron places extra emphasis on the last two words nuzzling into Cyclonus's helm
"You're both embarrassing!" Conquest squealed
"Were your creators were allowed to be!" Cyclonus giggled as Galvatron traded nuzzling for gentle nibbling around the edges of the helm and Conquest looked away huffing harder. Cyclonus then shifted the reports over to him freeing up a bit more space for him to flip Galvatron over onto his lap.
"Maybe you should give them a glance, you'll be their leader one day" He said as he played with the giggling Decepticon in his lap. Conquest slowly turned to give the reports a glance he kept his face firmly pointed downwards, doing his best to avoid seeing his creators being embarrassing.
AGAIN.
The reports had many words in, too many and his young processor rejected reading them within 0.1 seconds.
"Eugh they can just show me what they've done" Conquest spat at the boring reports
"Mmmn? Atta.... boy... yes" Conquest looked up at the badly mumbled response off his Carrier only to
"Ugh you guys are gross" He looked at them both burying their faces in the crooks of each others necks peppering the surrounding plates with kisses and nibbles. Galvatron managed to pull himself away long enough to stick his tongue out with a cheeky wink.
"I'm a gross 'con" he grinned at his child who blew a raspberry back earning a giggle. Cyclonus ended up joining in the giggling mostly enjoying the silly jibes between his child and partner and how adorable it was but it seemed to aggravate Conquest.
"Uuugh if you two are going to be gross all day I'll go hang out with the Sweeps and Uncle Scourge!" Conquest whined moodily before hopping off his chair "You're both gross gross gross!" He continued to squeak while heading towards the door.
"Guess that means we have ALL day alone not just tonight if you..." Galvatron murmured
"Oh my gosh! At least wait until I'm out the room!" Conquest got one last complaint in before storming away from the embarrassing twosome.
He grumbled to himself as he shuffled down the corridor, he didn't care what his creators got up to in their spare time but they didn't have to flaunt it, eugh, Conquest shuddered to himself. Everyone at the base knew of it too and that made it even more embarrassing, but he had to suffer with their grossly affectionate displays in private by himself. Conquest couldn't decide if that was worse or better.