Briana and Vincent
Vincent is a really kind hearted dude but he is also very sensitive, with that said, he is a good fit and for Briana, he has learned over time how to handle her energy already and no offense the Domican homie isn't dumb and know he essentially hit the jackpot as I think Brianna is the most well balanced of all the women to be on the show, imo.
Briana has a little bit of a snarky attitude and can be condescending at times but she is smart, pretty, has a good personality otherwise, really the full package.
They will last for a long time unless something crazy happens.
These two I think are a bit dependent on Vincent's career. He said his last girl left him because of his business and Briana initially said she wants someone who out earns her. I don't think he outearns her but it's tough to tell wtf his job is. I can see finances being a potential issue for them in the future.
Erik and Virgina
I have no idea whose idea it was to pair a super conservative white dude and this free spirited party girl with severe anxiety issues. Erik comes from money or at the very least an upper middle class background and he wants the submissive wife and 2.5 kids.
Virginia wants all the advantages of middle class life and none of the responsibility. She wants the freedom to go out, drink to much and pass out in other men's couches. She has no concept of what marriage is much less a healthy marriage, hell she can't even control dog
If Virginia doesn't adjust to Eriks program they won't make it.
I love watching these two self-destruct after the bs they were on earlier in the season. They got along great on the honeymoon, but Erik was in "vacation mode" while Virginia was doing what she normally does. Now that Erik is off vacation mode, he's realizing she just wants to party all the time like you said.
I don't see her adjusting. Erik is too old, too lame, and comes off like an annoying stepdad rather than a husband. No way he will be able to mentally handle leaving her at home alone while he's at work flying around the country.