Hello Tammy! That seriously is a small horde. It's like a whole Quidditch team. ;D
1. Remus was probably really nervous around her when they first started school if she was like that from the get go. By now though, he's probably used to her and appreciates her unfailing friendliness, though he might hide from her following the moon. Haha. But yes, friends! Remus loves his house mates, okay? Also, I personally love Holland Roden so squee to her PB.
2. Remus would be friendly with Aiden. He's used to competitive Quidditch from his friends, even though he isn't quite as into it as them.
3. Remus votes for intellectual discussions with Caradoc, please. Remus likes talking about topics he finds interesting and unfortunately his books don't talk back.
4. Remus probably like ... adores Marlene a) because she's super into her studies like he is and b) because she's dating Sirius which is just like an extension of his love for one of his best mates. So, basically, yay Marlene!
5. Remus would be more than willing to help Skye. He actually enjoys helping people with their coursework, so he'd probably invite her to impromptu study groups and the like.
6. Remus is kind of the opposite of that. He takes great pride in clamping down his emotions, so he might alkhdsjkfs if she starts an argument with him nearby. He'd be nice to her though, and admire her for standing up for herself. He'll try to steer the pranks in another direction, but he promises nothing!
7. Alecto is scary. Srsly. Remus will not admit that she gives him the heebie jeebies, but he also isn't going anywhere near her unless he has to. He's sensible that way.
8. Remus will take coldly civil. He might be a bit wary of her if she wasn't always nice to Gryffindors in the past and if she still isn't nice to Sirius because Sirius is his bro, but he also wouldn't do anything to make her attempts at civility difficult.