I really don't like the prince as a love interest, and not because of what happened in the first timeline. Like, Violette did repeatedly lash out at Maryjun and, uh, try to murder her, so him being angry and wanting her dead is understandable. Trauma's not an excuse to be shitty and/or a murderer, y'all
THAT BEING SAID I STILL DON'T LIKE HIM due to the whole "oh I didn't give a single shit about this girl until she stopped paying attention to me, now I want her" thing. That just, sucks. Hate it. Hate that concept, hate that trope. Makes it obvious that he doesn't really care about her as a person, he just cares about the attention/affection/prestige that she can give him
Not to mention the shitty message of "if a girl says no to your advances, just pursue her more! Eventually she'll accept, and that's love!"
And wrt Maryjun and Violette, Maryjun was trying to stand up for Vio, but got talked over. Plus, I get the feeling she's not used to confronting her parents (esp her dad), so there's gonna be some bumps in the road as she figures out that her loving father is also a complete shithead bastard to her sister. It can be hard to accept that someone you love, who's always been good to you, can also be a terrible person in the general sense