Prowl and Jazz had been bonded since before the war, everything was great between them. Except for the fact that no one seemed to realize that they were already together. They weren't even trying to hide it, they just weren't obvious either. That could have been a good thing for Prowl was second in command (SIC) and Jazz third in command (TIC), but there wasn't any law against them being together, so it didn't really cross their minds. Over the years some of the bots caught wind of something between Prowl and Jazz, but thought it was only Jazz being his flirty self. That all changed one day when a new shipment of recruits came to the base. One of the recruits fell helm over pedes for Prowl. Both Prowl and Jazz laughed behind closed doors at the bots' obliviousness, until it became more than harmless flirting.
It was late at the end of the day Prowl was working on the last data pad of the day in the rec room waiting for Jazz to meet him when then the new mech took it too far. The mech kept interrupting Prowl and ignoring when Prowl said that he was busy, and no he didn't want company he was waiting for someone. Eventually the Mech touched Prowls door wings.
"Remove your hand or I will" Prowl growled.
"But they are so touchable, and I know I could give you a nice night" the mech cooed stroking a hand down Prowl's wing.
Quicker than an optic could catch, a knife flew through the air embedding in the mech's hand "Hands off what not yours" Jazz growled from the shadows. The mech sputtered as Jazz came over and yanked his knife out of the mech's hand. "Now get outta here before I decide to throw ya into the brig."
The Mech ran off muttering about a crazy saboteur.
Jazz subspaced his knife then ran a hand over Prowl's wing sending a magnet pulse over the spot where the knife slightly sank in. "Jazz do I have to repeat what you just said to that Mech? " Ironhide asked looking pointedly at Jazz rubbing Prowl's wings
"No," Jazz smirked making Prowl chuckle silently, and Ironhide raised an eyebrow. "Cause these are mine"
"Jazz, you can't just claim Prowl's wings," Ironhide started ranting.
"Actually, he does have claim of them," Prowl stated flicking Jazz's hands off. Ironhide looks at them eyes wide with realization.
"Wait, you didn't know?" Jazz deadpanned. "How did they not know?" Jazz asked Prowl.
"I do not know why they didn't realize we are bonded, my Jazz" Prowl said grabbing his hand and making a quick getaway to their room.
That is the Story of how all the Autobots learned that their SIC and TIC were bonded.