Types of characters do you like to pair in your writing?

What kind of characters do you usually like to pair together while writing? Like, romantically or platonically? For romantic relationships, I love to put together two characters that didn't seem to like each other in the beginning, but by the end, they've fallen so deeply in love it's hard to imagine they ever disliked each other. For platonic relationships, I love pairing older people with younger people, especially if that younger person hasn't had a good parent figure in their life. And brother/sister relationships, even if they aren't actually siblings, absolutely KILL me. Like YES, GIVE ME THAT SHIT. GIVE ME THAT GOOD SHIT.

Anyway, what are your favorite kinds of character relationships?

I LOVE BROTHER/SISTER/SIBLING RELATIONSHIPS I HAVE SO MANY IN MY STORIES OMG I THINK I OVER DO THEM. To list a few, AH-HEM:
Evie, Brielle, Sprite, and Andi,
Aimee, Laina, and Isaac
Kenneth and Theo,
Dylan and Angie,
Siduri and Inanna,
Caleb and Lotus,
And I have even more.
I also love those non-related parental figure relationships, but I don't necessarily make them that much older than each other. I have one character who's 27, very motherly and a little bit insane, and she's friends this with this reserved, precious-cinnamon roll 18 year old guy who's not exactly all that close to his family and one day she just decided she'd adopt him as her own and calls him her son and he keeps telling her to stop but she won't.
For romantic stuff…hmmm I gotta say I'm a sucker for opposites attract, I have this really tough and dour female character who never smiles and this flirty, easy-going guy who's always smiling and he really gets on her nerves and flirts with her, which she hates. I don't think I'm going to make them canon in the story only because I already have one canon relationship (the book's gonna end with their wedding) and I want the story to focus more on plot and relationship of the four sisters than "who's gonna end up with who!?!", but I still love and ship those two and believe me I'm gonna add some cute bonding moments.

Ooh really!? Which one?

Aww lucky! I love the name Evie!! Wish that what my name. Evie was the name of a little girl in the nursery I used to work at and I loved her name so much I decided to name my character after her! Does your full name happen to be Genevieve? Cause that's my character's full name she just goes by Evie.

Oh, just as pretty though!

UGhdhhdghalsdfh SIBLING RELATIONSHIPS ARE MY LIFEEEEEEEE

For romance, I like pairing outgoing with quiet and things like that, its just really interesting how they interact and act differently in certain circumstance.
And best friends turned lovers kind of relationships I really like as long as it is not super cringy or weirdly long.

I've got this oddly specific trope I use a lot that I didn't even realize I used until recently. It's the power imbalance relationship. Honestly, it's not a healthy relationship AT ALL but it shows up in my writing a lot. It's basically where I have two characters, character A, and character B. Character A is stronger physically, often cruel or morally inept, basically not the greatest person out there. Character B is a ray of light, but weaker or inept physically. Basically, B is A's moral compass. A starts to realize that they're not a good person and begins to rely heavily on B, to the point of utter devotion and worship. It gets really extreme sometimes.

Other than that, I love the best friends to lovers cliché, the relationships where one character is the other's foil, and the opposites attract relationships. I also adore platonic friendships.

I like to get characters with matching personalities. Often, these characters already know each other at the beginning of the story. Especially nerds. For example, Walker and Erika from Durarara!!
I like it when couples or friends are totally at ease with each other, and are coordinated enough to dramatically pose when necessary. If I can't imagine them using each other as furniture while watching Friends, I won't write it.

I like when romantic relationships form between a protagonist and a former antagonist. Probably why I have two of them in my universe.