Hi Kaitlyn!
Beau and Harper - Definitely down for them to be friends and potentially romantic interests, depending on how they get along. I saw that his dad is a seer, so is he still interested in Divination? Harper likes the idea of the subject but is terrible at it, so maybe we could do something there? Also happy to have them meet some other way!
Lucifer and Harper - Ooh this should be interesting. Would he openly confront/make remarks toward a known muggleborn? (Harper's pretty obvious about her blood status given her muggle clothes and all the muggle objects she carries around). Or we could find a scenario to provoke something between the two of them.
Levi and Weston - This sounds perfect! I'm assuming they at least vaguely know each other through being roommates, so Weston is always happy to invite Levi along to play some board game with him, or ramble about some cool legend he's heard. I think Weston would initially be pretty oblivious to Levi's annoyance of him, but if he does catch on, he'd feel so bad.
Grisha and Celia - Aww, Grisha seems very sweet. I don't know how much Celia would like him right off the bat, but if he's persistently nice, she'd probably soften up eventually (or at least not be rude to him). After all she doesn't really have a ton of options for people who will be genuinely nice to her