It sounds like I'm in the minority in that so far Bella is the only main LI I have no interest in as as a lover. She's gorgeous and sexy, sure, but between her obvious hangups and the fact she's such a hoot as a grumpy surrogate sister, I am more than ready for the MC to be 'just friends' with her.
The MC's attraction to her feels extremely shallow to me. The only meaningful insights they've exchanged was the MC telling her about Zoey, and that does not feel like enough to start a relationship.
It got even worse with Episode 5. I thought Bella's scene in Episode 4 was well done, in part because she was the one who initiated it (once the player picked the option, obviously). But in Episode 5 she was telling the MC they shouldn't be doing this even as he's fondling her. That really felt like a misstep and makes me wonder what is supposed to be going through the MC's mind.
I'd be a lot happier if the MC would deal with Bella's concerns
before he presses her for sex. If nothing else, it would give us a chance to get to know her. Sadly, given how hard the game is playing up the mystery around Bella's marriage, I'm not sure that is going to happen anytime soon.