high fives yesss join me XD
D'artagnan: Dar is both very quick to show affection and very careful not to overstep himself. He sometimes worries that his friends don't feel as close to him as he does to them, so he usually holds back a bit. If he had his way, he'd be hugging them every time he saw them, giving them gifts of food and doing little favors for them, and constantly telling them how awesome they are and how lucky he is to know them. He still does all of that, but he keeps it toned down for fear of seeming clingy.
When he eventually starts to fall for Kineta after years of being just friends, he realizes that he's finally found someone to give every ounce of his affection without wondering how she'll take it.
If he ever found out he loved someone who didn't love him back, he'd be heartbroken and immediately pull away, probably beating himself up about it as well.
Kineta: Kineta is a very chill, socially confident person, and she feels she has too many enemies from her rough past to risk making any more. She shows her friends affection by watching out for them, letting them see her goofball side, and calling literally everyone "girl" or "bro" or "fam." With close friends, she's more willing to open up and show them her weakness when she needs a listening ear or a good hug. Still, there's only one person she acts sensitive or "girly" around, and that's Dar because she trusts him with her life and she's never met a guy so 100% kind and caring before. When they eventually start dating, she realizes she hugely enjoys holding hands with him and parading him around like "Yeah, this guy's taken and he's mine." XD
She wouldn't take it too hard if someone didn't like her back. It's a free country. she'd probably just move on but stay polite with them.
Melanie: There's a lot of layers to this girl. On the surface, she's polite, quiet, and friendly, and she won't hesitate to show support to her friends if they seem to need it. She's very observant, and uses her ability to read people to be there for them when no one else notices they're struggling.
Underneath the surface, however, she's detached, calculating, and reserved. She only puts up a kind front because she's afraid of solitude and rejection, and everything she does is a carefully-planned attempt to make herself popular and valuable within her social circle. She doesn't really realize how manipulative she's being—in her own mind, she sees friendship as a business transaction and simply believes that if others don't feel good around her, they'll drop her like a used napkin. She fears that if she shows them just how miserable she is on the inside, they'll abandon her.
Over time, however, she starts to feebly wonder if she can open up to two of her friends in particular: Kineta and Dean. They've proven their loyalty over and over, and they seem comfortable showing anger and grief in front of her, so maybe she can trust them with the feelings she's shut away for so long. It hasn't happened yet, but I can tell you that if it does, it will involve several hours of inconsolable crying in her friends' arms.
Someone not returning her affection would simply confirm all her worst fears, and would send her right back to the hole of self-pity and cynicism she came from.
Dean: Dean is the kind of girl who lives loud in order to cover up her own insecurity when it comes to showing affection. She gets flustered and embarrassed very easily if someone's nice to her, and prefers not to dwell on mushy feelings much. She shows her friends she likes them by trying to physically fight them lol. At first her friends thought she was this brash and outgoing around everyone, until they saw her with someone she hates and realized how quiet and withdrawn she gets when she's uncomfortable. She's never truly crushed on someone before, but if she did, she'd be a stuttering mess any time she saw them. She does have a soft side, but it only shows itself when one of her friends is clearly sad about something. And even then, she's still not very good at being sensitive and gentle.
She's very oblivious, and if someone didn't like her as much as she liked them, it would have to be spelled out to her.
Brandon: He has levels of affection. First there's "I hate you and I'm not afraid to say it", then "I still hate you but I'll tolerate you I guess", then "Actually you're pretty cute, wanna get coffee?" then waaaay beyond that is "Somehow I trust you with my real feelings now, dangit". Around friends, he shows affection by not glaring at them as fiercely and actually helping them out with stuff (with plenty of griping and complaining). Around crushes, he's devastatingly flirty and quick-witted, always trying to make them blush. He's still not very open with them though, which means he rarely stay in a relationship for long. Around true friends (in other words, around the one person who was patient and unflappable enough to get past his many walls), he is….irritable and snarky, yes, but also knows when to quit and doesn't get as defensive when that person wants to have a serious discussion about how Brandon's really doing. He respects and even trusts this person eventually, and while he originally flirted with them a lot, now he understands their relationship goes deeper than superficial attraction. They actually like each other as people, and that's a very unfamiliar feeling for Brandon.
He's had many times where he flirted with someone who wasn't interested, and usually he's good at accepting their 'no', but sometimes arguments start and he says things he later regrets.
Boar-back: Once everyone's older brother, now everyone's grandpa, this guy was born to watch out for people. He's not a softie, though, and many of the people he'd willingly kill for have no idea how much he cares about them. Frankly, he can be terrifying. But once you get to know him, you realize he shows affection through acts of service—he always makes sure his motley crew is fed and clothed and relatively happy, and he's careful to check up on them so they have everything they need. He doesn't ask them to do anything he wouldn't do himself, and when he's making decisions, he always puts his group first. Outwardly, he might seem emotionless at times, but he's a rock for a lot of people and he knows it.
Around very close friends, he's more transparent about his thoughts and feelings, but just enough to show them he trusts them. Around his crush, he has a bit of a flirty side, but mostly he enjoys the fact that he has someone to care for who won't use this show of 'weakness' against him—something he has to be careful of in his line of work. Also he loves being the only person in the world who can fluster his crush, who is a notorious player in his own right XD
He doesn't waste affection on those who don't want it, but on the rare occasion where someone doesn't love him back when he expected them to, it gives him pause. He almost always backs off and tries to figure out what he did wrong, because he knows he can seem very cold and intimidating and
he's mature enough to admit that usually it's his fault he gets pushed away.
That was a bit of a dump, lol. I'll probably add more later.