You are certainly not alone in having so many headcanons about 2youngjae! I really adore the dynamics between those three boys, and headcanons about them are so important to me. The way that they all take care of each other and adore one another is so very precious and inspires my imagination so much! Your headcanons also fill my mind with so many images because I agree with all of them so much... so please forgive me if I let my 2youngjae emotions run away with me under the ‘read more’!
Because I can so easily see Jinyoung being the one to coax Youngjae out of his thoughts when Youngjae starts getting caught up in his emotions and pulling away from the others. He patiently and quietly convinces Youngjae to share all of his fears, and concerns, and the things that are hurting him, and then he coaxes it all away with reassurances and arguments and cute teasing and reminders that Youngjae is loved and has not alone!
And Jinyoung definitely looks after Jaebum by giving him his full support! Not only is he always there fore Jaebum with little touches and glances and smiles of encouragement, but he’s also the one to notice when Jaebum starts getting stressed or overwhelmed. I can see him pulling Jaebum aside and letting Jaebum rant and rage and cry at Jinyoung about whatever is bothering him, and then comforting Jaebum and talking him through it all (while Youngjae awkwardly tries to cheer Jaebum up in his own way)!
And then Jaebum pouring out his love onto his boys all the time forever!! He’s such a sap for them both, even if he shows it in slightly different ways! Like with Youngjae, he’s totally the type to spoil Youngjae rotten because of how soft he is for him! He probably buys Youngjae new games and things for Coco just to see Youngjae’s happy smile, and he’s a total dork and a sap toward him all the time (to the point that Youngjae gets embarrassed), because he loves making Youngjae laugh.
Jaebum’s love for Jinyoung might be a bit less sappy sometimes (because Jaebum’s had 8 years to learn how to control himself, whereas he’s only had 4 years with Youngjae!), but Jaebum is still totally weak for him and likes to pamper Jinyoung by buying him new books, and he still has a habit of getting lost staring at Jinyoung. He’s also still addicted to bantering with Jinyoung and sharing inside jokes with him in order to get him to smile and laugh because Jinyoung’s happiness is one of his two favorite things in the world. (One guess as to what his other favorite thing is!)
And Youngjae may be awkward and shy about showing emotions, but he adores his hyungs so very much! He can get really flustered by Jaebum’s over-the-top skinship and affection (especially in public!), but Jaebum’s obvious love for him also makes him really happy, and it reassures him when he starts feeling anxious and unsure about whether he’s good enough or whether he’s actually wanted. Even though Youngjae gets embarrassed, he tries to show Jaebum how much he loves him by returning his displays of affection and going along with his cheesiness!
I think it’s probably a little easier for Youngjae to show his affection for Jinyoung because Jinyoung doesn’t embarrass Youngjae quite as much by being so over-the-top! Youngjae doesn’t get as shy about skinship with Jinyoung partly because Jinyoung is just too comfortable for him to be around... and partly because excessive skinship with Jinyoung can get Jaebum jealous from feeling left out, and 2young enjoy teasing Jaebum too much, haha! Youngjae is probably always struggling to find a way to show affection to Jinyoung though, because Jinyoung makes Youngjae feel so needed and wanted and loved and Youngjae wants him to know how much he needs and wants and loves Jinyoung in return!
Ahhh, I could honestly go on and on about 2youngjae for so long because I have SO MANY feelings and thoughts about them, but I’m going to stop myself here because I’ve already spent so long gushing unnecessarily about them! But truly, anon, you are not alone in your appreciation for 2youngjae at all!!