So basically these are when you argue in a specific instance, in case that wasn't clear...

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Eren: You always worry about Eren's safety, but sometimes he takes that the wrong way. He'll get mad and start an argument. He'd probably be mad that you care about him and you'd have to defend yourself on why you care. Of course you'd think the argument you're having is dumb, and you'd say that. That was a mistake. Now he's accusing you of not understanding what it's like to be him, and blah blah blah. After a while, you'd just leave to let him think about the stupid crap he was saying. 

Mikasa: In Mikasa's eyes you're always nagging her. Sometimes she appreciates it. Other times she gets annoyed bit it. On a particular bad day, you were nagging Mikasa. At first she'll ignore you but when you keep talking she'll end up yelling at you. Since you don't like being yelled at you'd start yelling back and it would basically end up being a screaming match. Eventually one of you guys would storm off and you wouldn't talk to each other after for at least a week. 

Armin: You guys argue over menial things. People csay you guys are like a married couple because you bicker so much. You guys argue about little things like leaving stuff all over the floor to big things like one of you almost dying. Your arguments never last too long, but they happen quite a  bit. One of you is always more mad than the other, so whoever is less mad has to calm the other down. In the end Armin's  always the one who becomes the bigger person and deescalates the situation. 

Levi: There were times when you'd want him to open up about things, but he wouldn't budge, so you'd get frustrated. He'd notice it and flip things on you, making you mad. As you guys would get more and more mad, neither of you would actually yell. You would both take turns hurling insults at each other, but then Levi would say something that would really hurt your feelings and you'd just leave without another word. 

Hange: You're always trying to make sure Hange is being safe, but that's an almost impossible task. One time you'd try to bring it up to Hange, but Hange just wrote you off, saying that nothing bad was going to happen to them. Obviously Hange not caring about your feelings made you get upset and you'd cry trying to explain how you felt about the situation. Hange wouldn't understand why you were crying and would be trying to argue that you crying wasn't going to make anything better. Eventually Hange would feel bad though and comfort you mid argument, but Hange still wouldn't change their view.

Jean: You were always kind of jealous of Mikasa, but anytime you brought up that insecurity Jean would get all defensive, and would try and dismiss you. He'd start going on and on about how you need to stop being paranoid and stuff. You'd get mad because he wasn't listening and at some point he'd probably say, "Well if you were Mikasa then...". Him saying that would hurt your feelings so much and you'd run out crying. As soon as he said it though he would have known he fucked up. 

Sasha: When you too argue it's always about morals. Whenever she steals food, even if she doesn't get caught you'd have something to say about it. You guys would both be arguing and you'd tell her that you feel she cares more about food than you. After you'd say that she'd be hurt you think of her like that. You guys would end crying together and would ultimately just discuss your disagreements in a civil non yelling manor.

Connie: He thinks that you're too reckless with your life and you disagree. He tries to get you to take it down a notch but you get defensive, then he gets defensive and it's a mess. Connie would shake you by your shoulders and explain how he doesn't want to loose you mid argument. This would instantly deescalate the situation and you'd go from there. 

Bertolt: He always treats you like a baby. He doesn't mean to, but he does. He'll say something that you won't like and you'll call him out on it. From there you two will start to bicker and it only escalates from there. Next thing you know you're both yelling and then he starts crying. After your heated argument you probably wouldn't talk to each other for a few days after in order to cool off. 

Reiner: When you two argue it's usually you starting the arguments. You always constantly worry about his mental and physical health, but anytime you try and bring it up he just blows you off. This makes you angry and you start trying to pick a fight with him. At first he'd be trying to keep his cool but he would end up blowing up at you which would only make you afraid of him.

Zeke: Whenever you try telling him to take it easy he always gets annoyed with you and starts getting an attitude. Once you notice his mood change you'll ask about it, but he just gets more annoyed and mouths off to you. You don't like the disrespect, so you start arguing with him. When you're arguing, you're the only heated on, he doesn't yell he just sounds irritated with you.Eventually you'd probably shove him or something to get him to give you more of a reaction, but then he'd grab your wrist. He'd almost snap and go off at you, but he decides to take the high rode and just walk away from you before things get more heated. 

Porco: You guys argue about the dumbest of things, but you take it so seriously. You'll like bump into him by accident and he'll make a disrespectful comment. The next thing you know you guys are having a full blown argument about who knows what. All kinds of F-bombs and middle fingers. You're call him childish and he'd call you stuck up. You guys could argue for hours and hours, then forgot about it the next day. 

Pieck: You guys kind of have petty arguments. You don't yell or scream you just go back and fourth with differing opinions. You don't like that sometimes she walks on all fours and she doesn't care that you feel like that. You'll both just go back and fourth until one of you gives up and let's the other have their way.