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Damian wasn't possessive.
Okay, scratch that, he was and Jason frankly found it fucking endearing. The way Damian full on snarled at anyone who flung a pick up line at Jason when they were undercover or the way Damian refused to let the rest of the Bats shower with them anymore. If anyone tried to touch Jason inappropriately outside of the Bartclan, Damian had daggers on hand instantly.
It was fucking adorable. And yes, to some, it was probably a lot, and maybe to some it appeared toxic and controlling but Jason could scoff in the face of those remarks. Damian might be a strong and intelligent young man but he'd never beaten Jason in a fight. Ever. So if Damian ever did anything Jason didn't like, it's not like the older one was trapped, Damian couldn't take over his life or anything like that. Not that Jason ever expected Damian to do anything of the sort.
The League only taught Damian one good quality between all the hurt and abuse and mental torture and that was devotion, the most intense case of loyalty. Damian was fierce for those he deemed to have earned his trust. Jason was honoured to be considered one of the very few.
So Jason wasn't worried about Damian ever harming him or the rest of the Bats.
Except right about now, Jason was unsure if Damian would hesitate before attempting to murder Bruce. Which wouldn't be good because Jason rather enjoyed using Bruce's credit cards which he stole from the man often. Bruce never confronted him, only sighed, tiredly, and rang for a new one every time.
"You make a lovely couple." The man had chimed, utterly clueless who either of them were and Jason had frozen instantly, head still resting on Bruce's shoulder from where the two had ended up sat beside one another. Jason had been using the position to finger through Bruce's wallet, taking a couple of cards and snickering at the terrible picture on a photo ID. Bruce had reached up to brush the hair from Jason's face, giving him a soft dopey smile like he always did when Jason offered any sort of affection towards the man. Bruce probably knew what Jason was up to but he hadn't stopped the younger. The older man seemed content instead with what he was doing to Jason's hair. They'd never get the relationship back that they had when Jason was a kid but they were working on it.
"Oh fuck." Jason whispered, feeling Bruce tense. Jason instantly sat up, eyes darting to look for Damian.
"Oh no no, we're not-" Bruce started before his words were cut short, long piano fingers reaching for the older mans chin, tilting his head back. Bruce didn't have a second to protest before he was silenced by the press of lips against his, fierce and devouring. Jason spluttered beside him, pulling away from that older man but Bruce ignored anything else and melted, able to see Dick above him, albeit upside down with the way the younger had moved his head.
It didn't last long but Dick made sure the man opposite knew Dick's tongue was halfway down Bruce's throat before he pulled back, smirking at Bruce, cheeks flushed and lips wet, eyes wide and yet so soft too.
"I'll think you'll find, this is my fiancé, not his." Dick snapped at the man who floundered helplessly. He fumbled his words, trying to mumble out an apology for his mistake only to freeze.
"D, please don't stab him. It was a mistake." Jason sighed as soon as he spied Damian behind the man, dagger pressed against his back.
"Dearest, I won't as long as he understands you're mine." Damian smiled, a sweet, sickly thing that might look harmless to the untrained eye, but to Jason he knew that face was Damian's attempts at quelling his fury.
"I- I'm so sorry." The man stumbled, tense and frozen against the dagger.
"Don't insult my Beloved again with your foolish fantasies." Damian hissed, blade vanishing up a sleeve as fast as it had been pulled. He stalked past the man and next to Jason, slightly taller than the older, something he'd lorded over Jason once he'd hit a growth spurt back in his teens.
"D. I'm fine, don't worry, Dickie already cleared things up." Jason joked, giving Dick a pointed look, the other man's arms were looped around Bruce's neck while the other man's hand curled around Dick's waist. The two weren't even paying attention. They were too busy being all sweet and disgusting, staring into each others eyes like teenage sweethearts.
"Hmfph. I suppose so, Grayson certainly gave an admirable display," Damian mussed. "But... he's mine." Damian continued, and that was the only warning Jason got before strong arms had grabbed him and tugged him against Damian's chest, palms grabbing his face by the cheeks and tilting his head back a little for Damian to dip down and claim his lips.
"I'm so… I've-" The man was flustered and turned to retreat, Dick, despite still staring at Bruce, snorted at the situation. Bruce gave him a scolding look, missing any malice and ineffective when paired with the heart eyes he was still giving Dick
"Ew. Can you guys seriously not go ten seconds without shoving your tongues down each other's throats." Tim deadpanned from behind them, having watched the events at a distance.
Jason, still being devoured by Damian in a feral display, held up his middle finger in Tim's direction. Bruce gave a laugh and shook his head.
"I'm afraid not Tim, now if you'll excuse me I need to borrow Dick for a bit." Bruce murmured and Tim turned up his nose. Dick gave a laugh at his expression.
"Sorry Timmy, I'll make it up to you." Dick chimed, knowing full well neither him or Bruce would be returning to the silly party with the bedroom eyes Bruce had. Tim sighed, pinching his nose and turning to Jason and Damian.
"Get out of here too, you're one step away from being detained for indecent exposure." Tim scolded, Damian didn't even listen, but Jason nodded, pulling back. The action resulted in a murderous look shot Tim's way by Damian but Jason only shook his head and grabbed Damian's hand in his own.
"C'mon D." Jason urged and Damian relented.
"Everyone fucking owes me." Tim grumbled to himself as both pairs snuck out of different doors. Tim turned back to look at Cass and Duke, who he'd been standing with, across the room. Duke gave him a cheeky thumbs up and Cass put down the phone she'd been filming on.
"Yep. I'm owed so much coffee." Tim pouted.